938:
949:
2772:
957:
280:
965:
2712:
2572:
38:
411:
62:
233:
2724:
359:
548:
73:
1669:
295:
211:
926:
315:
2736:
348:
2748:
2760:
553:
552:
550:
554:
1012:(for about 74 days at the North Pole and about 80 days at the South Pole). As one gets closer to the Arctic and Antarctic circles, the Sun's disk moves toward the observer's horizon at a lower angle. The observer's earthly location will pass through the various twilight zones less directly, taking more time.
439:
Observers within 63°26' of the
Equator can view twilight twice each day on every date between the month of the autumnal equinox and the month of vernal equinox between astronomical dawn, nautical dawn, or civil dawn, and sunrise as well as between sunset and civil dusk, nautical dusk, or astronomical
228:
BMCT (begin morning civil twilight, i.e., civil dawn) and EECT (end evening civil twilight, i.e., civil dusk) are used to refer to the start of morning civil twilight and the end of evening civil twilight, respectively. Civil dawn is preceded by morning nautical twilight and civil dusk is followed by
1776:
that he could not be killed during day or night, neither by human nor animal, neither inside his house nor outside. Vishnu appeared in a half-man half-lion form (neither human nor animal), and ended
Hiranyakashipu's life at twilight (neither day nor night) while he was placed in the threshold of his
243:
Under clear weather conditions, civil twilight approximates the limit at which solar illumination suffices for the human eye to clearly distinguish terrestrial objects. Enough illumination renders artificial sources unnecessary for most outdoor activities. At civil dawn and at civil dusk sunlight
1629:
Although
Helsinki, Oslo, Stockholm, Tallinn, and Saint Petersburg also enter into nautical twilight after sunset, they do have noticeably lighter skies at night during the summer solstice than other locations mentioned in their category above, because they do not go far into nautical twilight. A
912:
At latitudes greater than 81°25' North or South, as the Sun's angular elevation difference is less than 18 degrees, twilight can last for the entire 24 hours. This occurs for one day at latitudes near 8°35’ from the Pole and extends up to several weeks the further toward the Pole one goes. This
551:
435:
and civil dusk, nautical dusk, or astronomical dusk. This also occurs for most observers at higher latitudes on many dates throughout the year, except those around the summer solstice. However, at latitudes closer than 8°35' (between 81°25’ and 90°) to either Pole, the Sun cannot rise above the
302:
After nautical dusk and before nautical dawn, sailors cannot navigate via the horizon at sea as they cannot clearly see the horizon. At nautical dawn and nautical dusk, the human eye finds it difficult, if not impossible, to discern traces of illumination near the sunset or sunrise point of the
255:
Lawmakers have enshrined the concept of civil twilight. Such statutes typically use a fixed period after sunset or before sunrise (most commonly 20–30 minutes), rather than how many degrees the Sun is below the horizon. Examples include when drivers of automobiles must turn on their headlights
976:
The duration of twilight depends on the latitude and the time of the year. The apparent travel of the Sun occurs at the rate of 15 degrees per hour (360° per day), but sunrise and sunset happen typically at oblique angles to the horizon and the actual duration of any twilight period will be a
884:. At all other latitudes and dates, the polar night includes a daily period of twilight, when the Sun is not far below the horizon. Around winter solstice, when the solar declination changes slowly, complete darkness lasts several weeks at the Pole itself, e.g., from May 11 to July 31 at
587:. This also occurs in the Southern Hemisphere, but occurs on December 21. This type of twilight also occurs between one day and the next at latitudes within the polar circles shortly before and shortly after the period of midnight sun. The summer solstice in the Northern Hemisphere is on
574:
in the
Southern Hemisphere), twilight can last from sunset to sunrise, since the Sun does not sink more than 18 degrees below the horizon, so complete darkness does not occur even at solar midnight. These latitudes include many densely populated regions of the Earth, including the entire
497:
In the months of March or
September before the equinoxes, astronomical dawn to sunrise or sunset to astronomical dusk occurs at latitudes less than 63°26' North or South, because in the months of March or September before the equinoxes the Sun's declination is less than 8°34' from the
512:
In the months of March or
September after the equinoxes, astronomical dawn to sunrise or sunset to astronomical dusk occurs at latitudes less than 67°45' North or South, because in the months of March or September after the equinoxes the Sun's declination is less than 4°15' from the
398:, may require observation beyond the limit of astronomical twilight. Theoretically, the faintest stars detectable by the naked eye (those of approximately the sixth magnitude) will become visible in the evening at astronomical dusk, and become invisible at
491:
In the months of
February or August, astronomical dawn to sunrise or sunset to astronomical dusk occurs at latitudes less than 53°47' North or South, because in the months of February or August the Sun's declination is less than 18°13' from the
1035:. The lowest latitudes at which the various twilights can continue through local midnight are approximately 60.561° (60°33′43″) for civil twilight, 54.561° (54°33′43″) for nautical twilight and 48.561° (48°33′43″) for astronomical twilight.
518:
In the months of April or
October, astronomical dawn to sunrise or sunset to astronomical dusk occurs at latitudes less than 57°09' North or South, because in the months of April or October the Sun's declination is less than 14°51' from the
1637:
At the winter solstice within the polar circle, twilight can extend through solar noon at latitudes below 72.561° (72°33′43″) for civil twilight, 78.561° (78°33′43″) for nautical twilight, and 84.561° (84°33′43″) for astronomical twilight.
524:
In the months of May or
November, astronomical dawn to sunrise or sunset to astronomical dusk occurs at latitudes less than 50°03' North or South, because in the months of May or November the Sun's declination is less than 21°57' from the
485:
In the months of
January or July, astronomical dawn to sunrise or sunset to astronomical dusk occurs at latitudes less than 48°50' North or South, because in the months of January or July the Sun's declination is less than 23°10' from the
369:
Astronomical twilight is defined as when the geometric center of the Sun is between 18° and 12° below the horizon. During astronomical twilight, the sky is dark enough to permit astronomical observation of point sources of light such as
326:
Under good atmospheric conditions with the absence of other illumination, during nautical twilight, the human eye may distinguish general outlines of ground objects but cannot participate in detailed outdoor operations.
322:
Sailors can take reliable star sightings of well-known stars, during the stage of nautical twilight when they can distinguish a visible horizon for reference (i.e. after astronomic dawn or before astronomic dusk).
109:
The lower the Sun is beneath the horizon, the dimmer the twilight (other factors such as atmospheric conditions being equal). When the Sun reaches 18° below the horizon, the twilight's brightness is nearly zero, and
1650:
is longer than on Earth, lasting for up to two hours before sunrise or after sunset. Dust high in the atmosphere scatters light to the night side of the planet. Similar twilights are seen on Earth following major
549:
338:
nautical dusk) are used and considered when planning military operations. A military unit may treat BMNT and EENT with heightened security, e.g. by "standing to", in which everyone assumes a defensive position.
2273:
A Sanskrit-English Dictionary: Etymologically and philologically arranged with special reference to Greek, Latin, Gothic, German, Anglo-Saxon, and other cognate Indo-European Languages By Monier Williams
436:
horizon nor sink more than 18° below it on the same day on any date, so this example of twilight cannot occur because the angular difference between solar noon and solar midnight is less than 17°10’.
530:
In the months of June or December, astronomical dawn to sunrise or sunset to astronomical dusk occurs at latitudes less than 48°34' North or South, because in the month of June the Sun crosses the
880:
only rarely produces complete darkness for 24 hours each day. This can occur only at locations within about 5.5 degrees of latitude of the Pole, and there only on dates close to the
1027:. Outside the polar circles, where the angular distance from the polar circle is less than the angle which defines twilight (see above), twilight can continue through local midnight near the
503:
During the equinoxes, astronomical dawn to sunrise or sunset to astronomical dusk occurs at latitudes less than 72°00' North or South, because during the equinoxes the Sun is crossing the
267:
The period may affect when extra equipment, such as anti-collision lights, is required for aircraft to operate. In the US, civil twilight for aviation is defined in Part 1.1 of the
1807:(morning meal before fasting) ends at morning twilight, while fasting ends after sunset. There is also an important discussion in Islamic jurisprudence between "true dawn" and "
1031:. The precise position of the polar circles, and the regions where twilight can continue through local midnight, varies slightly from year to year with Earth's
1713:– most commonly in the evening of Holy Saturday or midnight – and is the first celebration of Easter, days traditionally being considered to begin at sunset.
1819:
In Judaism, twilight is considered neither day nor night; consequently it is treated as a safeguard against encroachment upon either. It can be considered a
224:
Civil twilight is the period when enough natural light remains that artificial light in towns and cities is not needed. In the United States' military, the
2071:
2005:
118:. When the Sun again reaches 18° below the horizon, nighttime becomes morning twilight. Owing to its distinctive quality, primarily the absence of
1740:, literally 'cow dust', referring to the time cows returned from the fields after grazing, kicking up dust in the process. Many rituals, such as
2229:
Herbert Glarner's website, reference 2. "Civil Twilight" "6°", "Nautical Twilight" "12°". "90° − Axis(23.439°) − 12° = 54.561°.
806:
2055:
2490:
977:
function of that angle, being longer for more oblique angles. This angle of the Sun's motion with respect to the horizon changes with
2463:
2520:
2364:
1308:
These are the largest cities of their respective countries where the various twilights can continue through local solar midnight:
2381:
Mateshvili, Nina; Didier Fussen; Filip Vanhellemont; Christine Bingen; Erkki Kyrölä; Iuri Mateshvili; Giuli Mateshvili (2005).
2431:
2298:
937:
885:
423:
Observers within about 48°34' of the Equator can view twilight twice each day on every date of the year between astronomical
195:
of twilight: civil twilight (nearest the horizon), nautical twilight, and astronomical twilight (farthest from the horizon).
2467:
2466:
with VBA functions for twilight (dawn and dusk), sunrise, solar noon, sunset, and solar position (azimuth and elevation) by
2125:
1964:
1930:
654:
Nautical twilight: between about 54°34' and 60°34' north or south. In the northern hemisphere this includes the center of
1023:
is encountered in summer, and in regions very close to the poles, twilight can last for weeks on the winter side of the
1008:
regions, twilight (if there is any) can last for several hours. There is no astronomical twilight at the poles near the
988:(51.5°N), the duration of civil twilight will vary from 33 minutes to 48 minutes, depending on the time of year. At the
913:
happens both near the North Pole and near the South Pole. The only permanent settlement to experience this condition is
2440:
2271:
1345:
2288:
17:
1748:, are performed at the twilight hour. Consuming food is not advised during this time. According to some adherents,
929:
The number of daylight hours depends on the latitude and time of year. Each pole has continuous daylight near its
126:
against the lit sky, twilight has long been popular with photographers and painters, who often refer to it as the
2331:
1934:
221:
Civil twilight is the time when the geometric center of the Sun is between the horizon and 6° below the horizon.
204:
1699:" observances often occur during twilight on the evening before major feast days or holidays. For example, the
252:, the brightest planet, as the "morning star" or "evening star" because they can see it during civil twilight.
244:
clearly defines the horizon while the brightest stars and planets can appear. As observed from the Earth (see
330:
Nautical twilight has military considerations as well. The initialisms BMNT (begin morning nautical twilight,
948:
291:
Nautical twilight is defined as when the geometric center of the Sun is between 12° and 6° below the horizon.
2513:
2002:
956:
318:
At the beginning of nautical twilight, artificial lighting must be used to see terrestrial objects clearly.
279:
268:
68:
twilight: astronomical, nautical, and civil stages at dawn. The apparent disk of the Sun is shown to scale.
901:
Solar noon at astronomical twilight during a polar night: between about 78°34' and 84°34' north or south.
778:
2702:
1594:
904:
Solar noon at night during a polar night: between approximately 84°34' and exactly 90° north or south.
898:
Solar noon at nautical twilight during a polar night: between about 72°34' and 78°34' north or south.
2659:
1523:
31:
2792:
1808:
774:
2422:
1585:
Major cities that near astronomical twilight (or grey night) from nautical dusk to nautical dawn:
845:
twilight lasts all night, this does not constitute a white night. This phenomenon is known as the
2807:
2506:
1673:
1631:
648:
390:, and other sources of light. Some critical observations, such as of faint diffuse items such as
169:, which may be used to describe the behavior of animals that are most active during this period.
2383:"Twilight sky brightness measurements as a useful tool for stratospheric aerosol investigations"
1000:
to the observer's horizon. But at the poles, civil twilight can be as long as 2–3 weeks. In the
480:
The nighttime/twilight boundary solar midnight's latitude varies depending on the certain month:
2150:
2107:
1571:
981:
as well as the time of year (affecting the angle of the Earth's axis with respect to the Sun).
770:
264:
is to be treated as nighttime burglary, which carries stiffer penalties in some jurisdictions.
102:
is below the horizon, which illuminates the lower atmosphere and the Earth's surface. The word
2776:
1846:
178:
95:
87:
79:
twilight: civil, nautical, and astronomical stages at dusk. The solar disk is shown to scale.
2037:
891:
Solar noon at civil twilight during a polar night: between about 67°24' and 72°34' north or
2471:
2394:
1899:
156:
1724:
prescribes the observance of certain practices during twilight, a period generally called
566:
At latitudes greater than about 48°34' North or South, on dates near the summer solstice (
8:
2812:
2380:
2257:
2164:
1890:
Van Flandern, T.; K. Pulkkinen (1980). "Low precision formulae for planetary positions".
1424:
1369:
969:
640:
535:
472:
454:
2484:
2398:
2363:, so it is more than 18 degrees below the horizon as seen from the South Pole. See
1903:
1368:. In the Southern Hemisphere, the only minor permanent settlement to experience this is
2728:
2664:
985:
245:
2446:
1827:
eve, and that of Saturday as Sabbath day; and the same rule applies to festival days.
847:
2360:
2294:
2058:
1851:
1652:
1353:
1349:
1341:
726:
604:
214:
2764:
2740:
2571:
2428:
2402:
1907:
1765:
1598:
1567:
1376:
964:
818:
734:
531:
257:
151:, to imply that something is losing strength and approaching its end. For example,
2711:
2359:
This is the range of dates when the Sun is more than 18 degrees north of the
414:
World map showing limiting latitudes of each type of twilight during the solstices
2457:
2435:
2315:
2009:
1745:
1741:
1535:
1464:
1028:
1009:
930:
881:
711:
580:
379:
131:
2129:
1975:
1938:
826:
37:
2797:
2716:
2689:
2314:
Jossleyn Hennessy (1955). "ch. VII Education in the villages "Cow-dust time"".
1798:
1769:
1685:
1681:
1483:
1452:
1375:
Nautical twilight (or if brighter, white night) from civil dusk to civil dawn:
914:
834:
766:
738:
636:
584:
576:
410:
2188:
232:
61:
2802:
2786:
2723:
2654:
2637:
2631:
2089:
1836:
1706:
1602:
997:
993:
917:, Canada, where it occurs from February 22–26, and again from October 15–19.
892:
810:
782:
699:
628:
600:
399:
358:
352:
237:
2209:
1372:, on the northern tip of the Antarctic Peninsula, politically part of Chile.
2752:
2679:
2024:
1701:
1692:
1579:
1575:
1470:
Astronomical twilight (or grey night) from nautical dusk to nautical dawn:
1020:
1016:
992:, civil twilight can last as little as 24 minutes. This is true because at
814:
466:
363:
284:
1820:
1333:
2684:
2407:
2382:
1867:
1862:
1677:
1668:
1606:
1440:
1357:
941:
877:
852:
822:
750:
730:
592:
571:
442:
191:
relative to the horizon. There are three established and widely accepted
165:
72:
2003:
http://msi.nga.mil/MSISiteContent/StaticFiles/NAV_PUBS/APN/Gloss-1.pdf#9
1634:
is a night with only civil twilight which lasts from sunset to sunrise.
1329:
888:. North Pole has the experience of this from November 13 to January 29.
2258:
Winter Solstice on Mars: Rovers Look Forward to A Second Martian Spring
1710:
1614:
1586:
1479:
1471:
1448:
1416:
1365:
1032:
786:
298:
Long exposure of nautical twilight in a small town in the Mojave Desert
123:
91:
294:
210:
2674:
2608:
2556:
2027:
University of Cambridge – Institute of Astronomy – Ask an Astronomer
1841:
1761:
1555:
1543:
1444:
1428:
1412:
1404:
1400:
1325:
1005:
873:
830:
707:
698:. In the southern hemisphere this includes the southernmost point of
691:
383:
127:
106:
can also refer to the periods of time when this illumination occurs.
2451:
1797:) are done, while evening twilight is the time for evening prayers (
1503:
559:
2669:
2626:
2476:
1911:
1737:
1721:
1563:
1539:
1408:
978:
856:
798:
790:
675:
632:
448:
261:
148:
925:
2593:
2561:
2546:
2538:
2498:
1824:
1622:
1559:
1551:
1531:
1475:
1460:
1436:
1432:
1396:
1388:
1384:
1361:
1313:
1024:
989:
802:
794:
762:
758:
746:
742:
722:
twilight lasts all night, this is also referred as a white night.
703:
695:
687:
667:
616:
612:
588:
567:
504:
460:
428:
375:
225:
111:
76:
65:
46:
1321:
725:
Astronomical twilight: between about 48°34' and 54°34' north or
362:
Astronomical twilight (dusk) with a crescent moon, as seen from
2598:
2483:
1773:
1764:, is closely associated with the twilight period. According to
1757:
1753:
1618:
1610:
1590:
1547:
1527:
1519:
1515:
1511:
1499:
1495:
1456:
1380:
1001:
869:
754:
683:
679:
671:
663:
659:
655:
624:
620:
608:
432:
395:
391:
387:
314:
152:
119:
50:
351:
Long exposure of astronomical twilight in a small town in the
347:
2618:
2365:
Position of the Sun#Declination of the Sun as seen from Earth
1857:
1793:
are to be recited. Morning twilight is when morning prayers (
1790:
1786:
1749:
1696:
1507:
1491:
1039:
Lowest-latitude twilight observed at local midnight by month
838:
715:
591:, while the summer solstice in the Southern Hemisphere is on
260:
in the UK), when hunting is restricted, or when the crime of
249:
115:
2603:
2588:
2551:
1794:
1647:
1487:
1420:
1392:
1337:
1317:
424:
371:
54:
42:
2747:
2479:
to find the current state of the sun in a specified place.
729:. In the northern hemisphere, this includes the center of
607:. In the northern hemisphere, this includes the center of
2530:
2332:"SUN, RISING AND SETTING OF THE - JewishEncyclopedia.com"
2239:
1823:
time. For example, the twilight of Friday is reckoned as
1752:
are regarded to be active during these hours. One of the
805:. In the southern hemisphere this includes the center of
188:
99:
1931:"Definitions from the US Astronomical Applications Dept"
1889:
1885:
1883:
1312:
Civil twilight (or white night) from sunset to sunrise:
635:. In the southern hemisphere this includes parts of the
334:
nautical dawn) and EENT (end evening nautical twilight,
155:
may be said to be "in the twilight of their lives". The
271:(FARs) as the time listed in the American Air Almanac.
187:, which is the position of the geometric center of the
2072:"Title 14: Aeronautics and Space PART 1 – Definitions"
1731:
1725:
2700:
1880:
647:
twilight lasts all night, this is also referred as a
203:"Civil twilight" redirects here. For other uses, see
27:
Atmospheric illumination by the Sun below the horizon
1802:
1705:is held in the hours of darkness between sunset on
542:
2494:. Vol. 27 (11th ed.). 1911. p. 492.
1730:. The period is also called by the poetic form of
2313:
863:
534:and in the month of December the Sun crosses the
2784:
599:Civil twilight: between about 60°34' and 65°44'
2458:Geoscience Australia "Sunrise and sunset times"
2165:"Sunrise and sunset times in Saint-Petersburg"
851:, nights when it does not get dark enough for
307:after nautical dawn but before civil dawn and
217:during civil twilight, demonstrating blue hour
2514:
1772:, performed penance and obtained a boon from
952:Carpet plot of sunshine at latitude 50° north
2100:
807:South Georgia and the South Sandwich Islands
311:after civil dusk but before nautical dusk).
135:
2472:NOAA's online calculator for sunrise/sunset
2020:
2018:
558:Timelapse video of twilight and sunrise in
143:By analogy with evening twilight, the word
2521:
2507:
1959:
1957:
1955:
172:
2406:
2269:
2025:http://www.ast.cam.ac.uk/public/ask/2445
2015:
1667:
963:
955:
947:
936:
924:
546:
536:Tropic of Capricorn (about 23°26' South)
418:
409:
357:
346:
342:
313:
293:
278:
231:
209:
71:
60:
36:
2441:Formulae to calculate twilight duration
2210:"Length of Day and Twilight (Formulas)"
1952:
1892:Astrophysical Journal Supplement Series
907:
14:
2785:
2293:. BoD – Books on Demand. p. 291.
2076:ELECTRONIC CODE OF FEDERAL REGULATIONS
1998:
1996:
1925:
1923:
1921:
1801:). Also during Ramadhan, the time for
960:Carpet plot of sunshine at the equator
405:
374:, except in regions with more intense
236:Civil twilight in a small town in the
2502:
2126:"Rise, Set, and Twilight Definitions"
532:Tropic of Cancer (about 23°26' North)
177:Twilight is defined according to the
2078:. U.S. Government Publishing Office.
1777:house (neither inside nor outside).
427:, nautical dawn, or civil dawn, and
274:
41:Twilight is the time period between
2286:
1993:
1918:
1641:
24:
2528:
2452:HM Nautical Almanac Office Websurf
2374:
2189:"Venus and the Moon strike a pose"
1965:"The American Practical Navigator"
1574:(largest in the continental USA),
25:
2824:
2447:The colors of twilight and sunset
2416:
944:of sunshine at latitude 70° north
886:Amundsen–Scott South Pole Station
198:
2770:
2758:
2746:
2734:
2722:
2710:
2570:
2276:. Clarendon Press. p. 1061.
2256:NASA-Jet Propulsion Laboratory:
2151:"What Is Astronomical Twilight?"
855:to do their observations of the
543:Lasting from one day to the next
2387:Journal of Geophysical Research
2353:
2324:
2320:. Orient Longmans. p. 127.
2307:
2280:
2263:
2250:
2232:
2223:
2202:
2181:
2157:
2143:
2118:
1663:
996:the Sun's apparent movement is
205:Civil twilight (disambiguation)
2443:(archived) by Herbert Glarner.
2287:Day, Lal Behari (2023-04-18).
2082:
2064:
2048:
2030:
1791:universally obligatory prayers
1789:as it determines when certain
1658:
864:Between one night and the next
570:in the Northern Hemisphere or
449:March 31 of the following year
122:and the appearance of objects
13:
1:
2317:India democracy and education
2012:Glossary of Marine Navigation
1974:. p. 227. Archived from
1873:
876:latitudes in wintertime, the
283:Evening nautical twilight on
2346:
2108:"What Is Nautical Twilight?"
639:and the northern tip of the
269:Federal Aviation Regulations
7:
1830:
1803:
1732:
1726:
1716:
920:
779:Vancouver, British Columbia
10:
2829:
2336:www.jewishencyclopedia.com
1814:
229:evening nautical twilight.
202:
29:
2647:
2617:
2579:
2568:
2537:
2270:Williams, Monier (1872).
2038:"What Is Civil Twilight?"
1785:Twilight is important in
1021:twenty-four-hour daylight
32:Twilight (disambiguation)
2429:Twilight time calculator
2290:Govinda Samanta: Vol. II
1780:
775:Orcas Island, Washington
2491:Encyclopædia Britannica
2460:Compute twilight times.
2454:Compute twilight times.
2425:Compute twilight times.
1680:preparing to light the
579:and other countries in
173:Definitions by geometry
147:is also sometimes used
1688:
1684:prior to Easter Vigil
973:
961:
953:
945:
934:
771:Bellingham, Washington
563:
415:
366:
364:Kuala Lumpur, Malaysia
355:
319:
299:
288:
240:
218:
136:
94:sunlight in the upper
80:
69:
58:
1854:, visible at twilight
1847:Diffuse sky radiation
1671:
967:
959:
951:
940:
928:
557:
419:Between day and night
413:
361:
350:
343:Astronomical twilight
317:
297:
282:
235:
213:
179:solar elevation angle
75:
64:
40:
2408:10.1029/2004JD005512
1526:(Falkland Islands),
908:Lasting for 24 hours
157:collateral adjective
30:For other uses, see
2423:Twilight Calculator
2399:2005JGRD..11009209M
2169:www.timeanddate.com
2112:www.timeanddate.com
2042:www.timeanddate.com
1904:1979ApJS...41..391V
1425:Newcastle upon Tyne
1370:Villa Las Estrellas
1040:
970:Paranal Observatory
821:. It also includes
641:Antarctic Peninsula
473:Southern Hemisphere
455:Northern Hemisphere
431:as well as between
406:Times of occurrence
248:), sky-gazers know
2470:, translated from
2434:2011-10-14 at the
2393:(D09209): D09209.
2260:, August 07, 2006.
2212:. www.gandraxa.com
2153:. timeanddate.com.
2008:2017-08-29 at the
1981:on 5 December 2021
1689:
1653:volcanic eruptions
1038:
986:Greenwich, England
974:
962:
954:
946:
935:
583:and even parts of
564:
416:
367:
356:
320:
300:
289:
246:apparent magnitude
241:
219:
81:
70:
59:
2698:
2697:
2464:An Excel workbook
2361:Celestial equator
2300:978-3-368-82160-9
2090:"The Air Almanac"
1768:, an asura king,
1674:Benedictine monks
1306:
1305:
1220:(before equinox)
1097:(before equinox)
555:
440:dusk, i.e., from
400:astronomical dawn
275:Nautical twilight
215:Midtown Manhattan
114:twilight becomes
18:Nautical twilight
16:(Redirected from
2820:
2775:
2774:
2773:
2763:
2762:
2761:
2751:
2750:
2739:
2738:
2737:
2727:
2726:
2715:
2714:
2706:
2574:
2523:
2516:
2509:
2500:
2499:
2495:
2487:
2485:"Twilight"
2412:
2410:
2368:
2357:
2340:
2339:
2328:
2322:
2321:
2311:
2305:
2304:
2284:
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2199:
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2178:
2176:
2175:
2161:
2155:
2154:
2147:
2141:
2140:
2138:
2137:
2128:. Archived from
2122:
2116:
2115:
2104:
2098:
2097:
2094:aa.usno.navy.mil
2086:
2080:
2079:
2068:
2062:
2061:
2052:
2046:
2045:
2034:
2028:
2022:
2013:
2000:
1991:
1990:
1988:
1986:
1980:
1969:
1961:
1950:
1949:
1947:
1946:
1937:. Archived from
1927:
1916:
1915:
1887:
1806:
1766:Hindu scriptures
1735:
1729:
1642:On other planets
1377:Saint Petersburg
1239:(after equinox)
1116:(after equinox)
1041:
1037:
819:Falkland Islands
735:Aleutian Islands
562:in February 2021
556:
258:lighting-up time
139:
21:
2828:
2827:
2823:
2822:
2821:
2819:
2818:
2817:
2793:Earth phenomena
2783:
2782:
2781:
2771:
2769:
2759:
2757:
2745:
2735:
2733:
2721:
2709:
2701:
2699:
2694:
2643:
2613:
2575:
2566:
2533:
2527:
2482:
2436:Wayback Machine
2419:
2377:
2375:Further reading
2372:
2371:
2358:
2354:
2349:
2344:
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2329:
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2158:
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2119:
2106:
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2088:
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2083:
2070:
2069:
2065:
2054:
2053:
2049:
2036:
2035:
2031:
2023:
2016:
2010:Wayback Machine
2001:
1994:
1984:
1982:
1978:
1967:
1963:
1962:
1953:
1944:
1942:
1929:
1928:
1919:
1888:
1881:
1876:
1833:
1817:
1783:
1742:Sandhyavandanam
1719:
1709:and sunrise on
1666:
1661:
1644:
1536:Luxembourg City
1465:Puerto Williams
1238:
1219:
1115:
1096:
1029:summer solstice
1010:winter solstice
931:summer solstice
923:
910:
882:winter solstice
866:
712:Puerto Williams
581:northern Europe
547:
545:
421:
408:
380:light pollution
345:
277:
208:
201:
185:
175:
153:very old people
35:
28:
23:
22:
15:
12:
11:
5:
2826:
2816:
2815:
2810:
2808:Parts of a day
2805:
2800:
2795:
2780:
2779:
2777:Earth sciences
2767:
2755:
2743:
2731:
2719:
2696:
2695:
2693:
2692:
2690:Zodiacal light
2687:
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2480:
2474:
2468:Greg Pelletier
2461:
2455:
2449:
2444:
2438:
2426:
2418:
2417:External links
2415:
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1912:10.1086/190623
1878:
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1860:
1855:
1852:Earth's shadow
1849:
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1839:
1832:
1829:
1816:
1813:
1799:Maghrib prayer
1782:
1779:
1770:Hiranyakashipu
1718:
1715:
1682:Paschal candle
1665:
1662:
1660:
1657:
1643:
1640:
1627:
1626:
1613:(48°12′30″N),
1609:(48°22′56″N),
1605:(48°23′26"N),
1597:(48°25'42"N),
1583:
1468:
1453:Grande Prairie
1373:
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915:Alert, Nunavut
909:
906:
865:
862:
861:
860:
835:Puerto Natales
767:Czech Republic
739:United Kingdom
723:
652:
637:Southern Ocean
585:central Europe
577:United Kingdom
544:
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276:
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200:
199:Civil twilight
197:
183:
174:
171:
149:metaphorically
26:
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2666:
2663:
2661:
2658:
2656:
2655:Belt of Venus
2653:
2652:
2650:
2646:
2640:
2639:
2638:Brahmamuhurta
2635:
2633:
2632:Witching hour
2630:
2628:
2625:
2624:
2622:
2620:
2616:
2610:
2607:
2605:
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2519:
2517:
2512:
2510:
2505:
2504:
2501:
2493:
2492:
2486:
2481:
2478:
2477:Time and Date
2475:
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2442:
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2310:
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2296:
2292:
2291:
2283:
2275:
2274:
2266:
2259:
2253:
2246:. 4 May 2022.
2245:
2241:
2240:"white night"
2235:
2226:
2211:
2205:
2190:
2184:
2170:
2166:
2160:
2152:
2146:
2132:on 2015-08-14
2131:
2127:
2121:
2113:
2109:
2103:
2095:
2091:
2085:
2077:
2073:
2067:
2060:
2057:
2051:
2043:
2039:
2033:
2026:
2021:
2019:
2011:
2007:
2004:
1999:
1997:
1977:
1973:
1966:
1960:
1958:
1956:
1941:on 2019-09-27
1940:
1936:
1932:
1926:
1924:
1922:
1913:
1909:
1905:
1901:
1897:
1893:
1886:
1884:
1879:
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1866:
1864:
1861:
1859:
1856:
1853:
1850:
1848:
1845:
1843:
1840:
1838:
1837:Belt of Venus
1835:
1834:
1828:
1826:
1822:
1812:
1810:
1805:
1800:
1796:
1792:
1788:
1778:
1775:
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1759:
1755:
1751:
1747:
1743:
1739:
1734:
1728:
1723:
1714:
1712:
1708:
1707:Holy Saturday
1704:
1703:
1698:
1694:
1687:
1683:
1679:
1675:
1670:
1656:
1654:
1649:
1639:
1635:
1633:
1624:
1620:
1617:(48°8′38″N),
1616:
1612:
1608:
1604:
1601:(48°25′0"N),
1600:
1596:
1593:(48°27'0"N),
1592:
1589:(48°29'0"N),
1588:
1584:
1581:
1577:
1573:
1569:
1565:
1561:
1557:
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1549:
1545:
1541:
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1323:
1319:
1315:
1311:
1310:
1309:
1302:48°33’38.6”S
1301:
1299:54°33’38.6”S
1298:
1296:60°33’38.6”S
1295:
1293:65°43’38.6”S
1292:
1289:
1288:
1285:50°03’25.0”S
1284:
1282:56°03’25.0”S
1281:
1279:62°03’25.0”S
1278:
1276:67°13’25.0”S
1275:
1272:
1271:
1268:57°09’50.5”S
1267:
1265:63°09’50.5”S
1264:
1262:69°09’50.5”S
1261:
1259:74°19’50.5”S
1258:
1255:
1254:
1251:67º45’53.0”S
1250:
1248:73º45’53.0”S
1247:
1245:79º45’53.0”S
1244:
1242:84º55’53.0”S
1241:
1236:
1235:
1232:63°26’07.0”N
1231:
1229:69°26’07.0”N
1228:
1226:75°26’07.0”N
1225:
1223:80°36’07.0”N
1222:
1217:
1216:
1213:53°47’19.5”N
1212:
1210:59°47’19.5”N
1209:
1207:65°47’19.5”N
1206:
1204:70°57’19.5”N
1203:
1200:
1199:
1196:48°50’36.0”N
1195:
1193:54°50’36.0”N
1192:
1190:60°50’36.0”N
1189:
1187:66°00’36.0”N
1186:
1183:
1182:
1179:48°33’38.6”N
1178:
1176:54°33’38.6”N
1175:
1173:60°33’38.6”N
1172:
1170:65°43’38.6”N
1169:
1166:
1165:
1162:50°03’25.0”N
1161:
1159:56°03’25.0”N
1158:
1156:62°03’25.0”N
1155:
1153:67°13’25.0”N
1152:
1149:
1148:
1145:57°09’50.5”N
1144:
1142:63°09’50.5”N
1141:
1139:69°09’50.5”N
1138:
1136:74°19’50.5”N
1135:
1132:
1131:
1128:67º45’53.0”N
1127:
1125:73º45’53.0”N
1124:
1122:79º45’53.0”N
1121:
1119:84º55’53.0”N
1118:
1113:
1112:
1109:63°26’07.0”S
1108:
1106:69°26’07.0”S
1105:
1103:75°26’07.0”S
1102:
1100:80°36’07.0”S
1099:
1094:
1093:
1090:53°47’19.5”S
1089:
1087:59°47’19.5”S
1086:
1084:65°47’19.5”S
1083:
1081:70°57’19.5”S
1080:
1077:
1076:
1073:48°50’36.0”S
1072:
1070:54°50’36.0”S
1069:
1067:60°50’36.0”S
1066:
1064:66°00’36.0”S
1063:
1060:
1059:
1056:Astronomical
1055:
1052:
1049:
1047:Midnight Sun
1046:
1043:
1042:
1036:
1034:
1030:
1026:
1022:
1018:
1017:polar circles
1013:
1011:
1007:
1003:
999:
998:perpendicular
995:
994:low latitudes
991:
987:
982:
980:
971:
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836:
832:
828:
824:
820:
816:
812:
811:Bouvet Island
808:
804:
800:
796:
792:
788:
784:
783:Paris, France
780:
776:
772:
768:
764:
760:
756:
752:
748:
744:
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736:
732:
728:
724:
721:
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713:
709:
705:
701:
700:South America
697:
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689:
685:
681:
677:
673:
669:
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661:
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638:
634:
630:
629:Faroe Islands
626:
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618:
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606:
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597:
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594:
593:December 21st
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353:Mojave Desert
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238:Mojave Desert
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196:
194:
193:subcategories
190:
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138:
137:l'heure bleue
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49:, or between
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2680:Midnight sun
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2309:
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2272:
2265:
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2204:
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2183:
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2130:the original
2120:
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2093:
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2066:
2050:
2041:
2032:
1985:15 September
1983:. Retrieved
1976:the original
1971:
1943:. Retrieved
1939:the original
1895:
1891:
1818:
1784:
1720:
1702:Easter Vigil
1700:
1690:
1664:Christianity
1646:Twilight on
1645:
1636:
1628:
1625:(47°36’35"N)
1621:(48°8'0"N),
1580:Punta Arenas
1576:Rio Gallegos
1307:
1014:
983:
975:
968:Twilight at
911:
903:
900:
897:
890:
867:
846:
843:astronomical
842:
827:Río Gallegos
815:Heard Island
719:
644:
565:
505:Equator line
479:
478:
471:
467:September 30
465:
459:
453:
447:
441:
438:
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368:
335:
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308:
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290:
285:Lake Ontario
266:
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192:
181:
176:
164:
160:
144:
142:
130:, after the
108:
103:
90:produced by
83:
82:
2729:Environment
2685:Polar night
2660:Golden hour
2529:Parts of a
2056:14 CFR
1868:Polar night
1863:Green flash
1695:practice, "
1678:Easter fire
1659:In religion
1632:white night
1607:Thunder Bay
1441:Letterkenny
1358:Arkhangelsk
1346:Yellowknife
1015:Within the
942:Carpet plot
878:polar night
853:astronomers
848:grey nights
823:El Calafate
751:Netherlands
731:Isle of Man
649:white night
572:December 21
443:September 1
305:first light
226:initialisms
166:crepuscular
134:expression
124:silhouetted
98:, when the
2813:Visibility
2787:Categories
2665:Terminator
2244:Wiktionary
2216:2011-08-26
2174:2023-08-26
2136:2007-09-06
1945:2011-07-22
1898:(3): 391.
1874:References
1809:false dawn
1711:Easter Day
1676:around an
1615:Bratislava
1587:Khabarovsk
1572:Bellingham
1480:Nur-Sultan
1472:Hulun Buir
1449:Nanortalik
1417:Copenhagen
1366:Baltasound
1342:Whitehorse
1033:axial tilt
787:Luxembourg
96:atmosphere
92:scattering
2765:Geography
2741:Astronomy
2675:Moonlight
2609:Blue hour
2557:Afternoon
2347:Footnotes
1842:Blue hour
1762:Narasimha
1693:Christian
1672:American
1556:Vancouver
1544:Amsterdam
1445:Petropavl
1429:Edinburgh
1413:Stockholm
1405:Flensburg
1401:Wejherowo
1354:Fairbanks
1350:Anchorage
1334:Reykjavík
1326:Trondheim
1290:December
1273:November
1237:September
1218:September
1078:February
1053:Nautical
1025:equinoxes
1006:Antarctic
874:Antarctic
831:Argentina
708:Argentina
692:Lithuania
589:June 21st
458:and from
384:moonlight
309:nightfall
303:horizon (
128:blue hour
116:nighttime
2670:Daylight
2627:Midnight
2581:Twilight
2432:Archived
2194:18 April
2006:Archived
1972:FlaterCo
1831:See also
1738:Sanskrit
1722:Hinduism
1717:Hinduism
1599:Saguenay
1595:Victoria
1568:Unalaska
1564:Edmonton
1540:Brussels
1409:Helsinki
1330:Tórshavn
1256:October
1061:January
979:latitude
972:in Chile
921:Duration
857:deep sky
799:Slovakia
791:Guernsey
720:nautical
676:Scotland
633:Shetland
525:Equator;
519:Equator;
513:Equator;
498:Equator;
492:Equator;
486:Equator;
396:galaxies
287:, Canada
262:burglary
256:(called
161:twilight
145:twilight
104:twilight
84:Twilight
2717:Weather
2703:Portals
2648:Related
2594:Sunrise
2562:Evening
2547:Morning
2539:Daytime
2395:Bibcode
2059:121.323
1900:Bibcode
1825:Sabbath
1821:liminal
1815:Judaism
1754:avatars
1733:gōdhūḷi
1727:sandhya
1623:Seattle
1560:Calgary
1552:Cardiff
1532:Hamburg
1524:Stanley
1476:Erdenet
1461:Ushuaia
1437:Belfast
1433:Glasgow
1397:Tallinn
1389:Vilnius
1385:Vitebsk
1362:Yakutsk
1314:Tampere
1201:August
990:equator
841:. When
803:Hungary
795:Ukraine
763:Belgium
759:Germany
747:Ireland
743:Belarus
718:. When
704:Ushuaia
696:Denmark
688:Finland
668:Estonia
643:. When
617:Finland
613:Iceland
568:June 21
470:in the
461:March 1
452:in the
429:sunrise
392:nebulae
388:auroras
378:due to
376:skyglow
120:shadows
112:evening
77:Evening
66:Morning
47:sunrise
2599:Sunset
2297:
1804:suhoor
1774:Brahma
1758:Vishnu
1750:asuras
1619:Munich
1611:Vienna
1591:Dnipro
1578:, and
1548:London
1528:Berlin
1520:Prague
1516:Zwettl
1512:Dublin
1504:Košice
1500:Warsaw
1496:Alytus
1484:Samara
1463:, and
1457:Juneau
1381:Moscow
1133:April
1050:Civil
1044:Month
1002:Arctic
870:Arctic
833:, and
755:Poland
694:, and
684:Sweden
680:Norway
672:Latvia
664:Canada
660:Russia
656:Alaska
625:Norway
621:Sweden
609:Alaska
560:Gjøvik
433:sunset
132:French
51:sunset
2798:Night
2753:Stars
2619:Night
1979:(PDF)
1968:(PDF)
1858:Gloom
1787:Islam
1781:Islam
1697:vigil
1603:Brest
1508:Paris
1492:Minsk
1184:July
1167:June
1114:March
1095:March
893:south
839:Chile
727:south
716:Chile
645:civil
605:south
601:north
372:stars
250:Venus
88:light
2803:Dawn
2604:Dusk
2589:Dawn
2552:Noon
2295:ISBN
2196:2016
1987:2023
1935:USNO
1795:Fajr
1746:puja
1744:and
1686:Mass
1648:Mars
1488:Kyiv
1421:Oslo
1393:Riga
1364:and
1338:Nuuk
1322:Umeå
1318:Oulu
1150:May
1004:and
872:and
825:and
801:and
710:and
631:and
425:dawn
394:and
336:i.e.
332:i.e.
159:for
55:dusk
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43:dawn
2531:day
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2391:110
1908:doi
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1756:of
1736:in
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984:At
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