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In the late 1980s, a team of researchers proposed separating the country into two or three time zones to conserve energy. The binary system that they suggested involved a return to
British-era time zones, but the recommendations were not adopted.
327:
Indian
Standard Time is calculated from the reference longitude of IST at 82°30'E passing near Mirzapur. In 1905, the meridian passing east of Allahabad was declared as a standard time zone for
402:, did not recommend changes to the unified system, stating that 'the prime meridian was chosen with reference to a central station, and that the expanse of the Indian State was not large.'
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371:
The country's east–west distance of more than 2,933 kilometres (1,822 mi) covers over 29° of longitude, resulting in the sun rising and setting almost two hours earlier on India's
530:
IST is taken as the standard time as it passes through almost the centre of India. To communicate the exact time to the people, the exact time is broadcast over the national
853:
973:
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447:(DST) indicated that it is once again studying the feasibility of two time zones for India. Proposals for creating an additional Eastern India Time (EIT at
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satellite-based standard time and frequency broadcast service, which offers IST correct to ±10 microsecond and frequency calibration of up to ±10.
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Though the government has consistently refused to split the country into multiple time zones, provisions in labour laws such as the
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time ('Tea Garden Time'), which is one hour ahead of IST. Still, Indian
Standard Time remains the only officially used time.
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to examine the need for multiple time zones and daylight saving. The findings of the committee, which were presented to
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have to advance their clocks with the early sunrise to avoid the extra consumption of energy after daylight hours.
455:
and daylight saving (Indian
Daylight Time for IST and Eastern India Daylight Time for EIT) starting on 14 April (
31:
323:
Location of
Mirzapur (near Allahabad) and the 82°30’ E longitude that is used as the reference longitude for IST
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allow the union and state governments to define and set the local time for a particular industrial area. In
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that also relay the precise time. Another increasingly popular means of obtaining the time is through
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television network. Telephone companies have dedicated phone numbers connected to mirror
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854:"How Indian Standard Time was introduced in India on September 1, 1947 - Explained"
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189:) until 1948 and 1955, respectively. The Central observatory was moved from
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Council of
Scientific and Industrial Research- National Physical Laboratory
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800:"September 1, 1947: How Indian Standard Time was introduced in country"
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In 2001, the government established a four-member committee under the
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established IST as the official time for the whole country, although
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47:
1049:"Government assessing feasibility of different time zones in India"
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359:(CSIR-NPL) maintains the Indian Standard Time with the help of the
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and synchronised with the worldwide system of clocks that support
157:
The Indian
Standard Time was adopted on 1 January 1906 during the
490:
Features of the Time and
Frequency Standards Laboratory include:
479:, for both commercial and official use. The signals are based on
174:
436:
of India. However, the proposal would need to be cleared by the
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319:
190:
178:
429:
410:
1106:
1031:"India could get second time zone with Assam one hour ahead"
1113:
Evaluating two timezones and
Daylight Saving Time for India
497:
broadcast service operating at 10 MHz under call sign
1006:"Gogoi for separate time zone for Assam - Times of India"
339:
for the whole country as it is located centrally between
413:, tea gardens follow a separate time zone, known as the
204:
Daylight Saving Time (DST) was used briefly during the
510:
Time and frequency calibrations made with the help of
27:
Time zone, observed in India and Sri Lanka; UTC+05:30
501:
to synchronise the user clock within a millisecond;
398:in 2004 by the Minister of Science and Technology,
965:
825:"Indian Standard Time: Lack of Scientific Temper"
1526:
971:
717:. Hyderabad Media House Limited. 19 April 2018
681:
428:started campaigning for another time zone for
335:. This longitude of 82°30'E was chosen as the
1135:
1079:Press Information Bureau, Government of India
872:
471:Official time signals are generated by the
1142:
1128:
463:) was submitted to DST for consideration.
366:
775:"India investigates different time zones"
636:"Military and Civilian Time Designations"
703:
331:and was declared as IST in 1947 for the
318:
181:retained their own local time (known as
878:
475:at the National Physical Laboratory in
473:Time and Frequency Standards Laboratory
14:
1527:
1116:, by Viral Shah & Vikram Aggarwal.
161:with the phasing out of its precursor
90:DST is not observed in this time zone.
1123:
913:"Standard Time for Different Regions"
768:
766:
764:
762:
661:
193:to a location at Shankargarh Fort in
972:Rahul Karmakar (24 September 2012).
917:Department of Science and Technology
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445:Department of Science and Technology
379:in the far west. Inhabitants of the
772:
219:
24:
947:National Resource Centre for Women
759:
392:Ministry of Science and Technology
197:, so that it would be as close to
135:("Echo-Star"). It is indicated as
127:or other seasonal adjustments. In
25:
1556:
1095:
879:Muthiah, S. (24 September 2012).
424:In 2014, Chief Minister of Assam
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1499:
1498:
1149:
505:Indian National Satellite System
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1041:
1023:
998:
935:
905:
773:Sen, Ayanjit (21 August 2001).
662:Menon, Nitya (22 August 2014).
466:
32:Time in the Republic of Ireland
1466:British Indian Ocean Territory
919:. 22 July 2004. Archived from
846:
817:
792:
664:"When Madras clocked the time"
655:
628:
314:
13:
1:
622:
30:For Irish Standard Time, see
1107:National Physical Laboratory
407:Plantations Labour Act, 1951
7:
1075:"Satellites for Navigation"
974:"Change clock to bagantime"
549:
459:) and ending on 2 October (
451:), shifting default IST to
10:
1561:
691:. Indian Railways Fan Club
485:Coordinated Universal Time
165:(Railway Time), and after
150:
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129:military and aviation time
29:
1494:
1453:
1413:
1155:
561:International Atomic Time
544:Global Positioning System
123:. India does not observe
103:), sometimes also called
89:
81:
74:18:51, 24 September 2024
73:
68:
58:
53:
46:
41:
1215:East Timor (Timor-Leste)
111:observed throughout the
1476:Cocos (Keeling) Islands
582:Sri Lanka Standard Time
367:Criticism and proposals
208:and the Indo-Pakistani
206:China–India War of 1962
141:IANA time zone database
324:
1102:Current Time in India
711:"India Standard Time"
577:Railway time in India
568:(disambiguation page)
361:Allahabad Observatory
353:local time UTC +06:00
345:local time UTC +05:00
322:
1390:United Arab Emirates
923:on 28 September 2007
804:www.timesnownews.com
296:Port Blair mean time
167:Independence in 1947
131:, IST is designated
125:daylight saving time
97:Indian Standard Time
42:Indian Standard Time
1417:limited recognition
741:Greenwich Mean Time
641:Greenwich Mean Time
434:northeastern states
381:northeastern states
375:border than in the
105:India Standard Time
1540:Geography of India
1053:The Economic Times
1010:The Times of India
943:"A matter of time"
881:"A matter of time"
860:. 1 September 2021
830:The Times of India
737:"India Time Zones"
520:frequency counters
443:In June 2017, the
355:). Currently, the
349:northeastern India
325:
305:19th century–1906
195:Allahabad district
1522:
1521:
1459:other territories
597:Time in Sri Lanka
546:(GPS) receivers.
337:standard meridian
333:Dominion of India
312:
311:
113:Republic of India
94:
93:
16:(Redirected from
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1471:Christmas Island
1157:Sovereign states
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982:. Archived from
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953:on 19 March 2006
949:. Archived from
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893:on 24 March 2002
889:. Archived from
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743:. Archived from
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587:Terrestrial Time
556:Equation of time
457:Ambedkar Jayanti
438:union government
224:
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220:Former timezones
171:Union government
39:
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689:"Odds and Ends"
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572:John Goldingham
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532:All India Radio
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1097:
1096:External links
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1055:. 22 June 2017
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1022:
997:
986:on 6 June 2011
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934:
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858:Jagranjosh.com
845:
834:. 10 June 2021
816:
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747:on 19 May 2007
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715:The Hans India
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518:time interval
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495:High-frequency
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1535:Time in India
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592:Time in India
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481:atomic clocks
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377:Rann of Kutch
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341:western India
338:
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329:British India
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260:Calcutta Time
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201:as possible.
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183:Calcutta Time
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153:Time in India
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1455:Dependencies
1385:Turkmenistan
1350:Saudi Arabia
1150:Time in Asia
1112:
1082:. Retrieved
1078:
1069:
1057:. Retrieved
1052:
1043:
1034:
1025:
1013:. Retrieved
1009:
1000:
990:22 September
988:. Retrieved
984:the original
977:
967:
955:. Retrieved
951:the original
946:
937:
925:. Retrieved
921:the original
916:
907:
895:. Retrieved
891:the original
884:
874:
862:. Retrieved
857:
848:
836:. Retrieved
828:
819:
807:. Retrieved
803:
794:
782:. Retrieved
778:
749:. Retrieved
745:the original
740:
731:
719:. Retrieved
714:
705:
693:. Retrieved
683:
671:. Retrieved
667:
657:
645:. Retrieved
639:
630:
540:time servers
529:
498:
489:
470:
467:Time signals
442:
423:
418:
414:
406:
404:
389:
385:
370:
326:
301:UTC+06:10:37
283:UTC+05:21:14
265:UTC+05:53:20
210:Wars of 1965
203:
156:
137:Asia/Kolkata
136:
132:
104:
100:
96:
95:
75:
69:Current time
36:
1514:Asia portal
1415:States with
1335:Philippines
1275:South Korea
1270:North Korea
1165:Afghanistan
1084:25 November
957:25 November
927:25 November
897:25 November
784:25 November
751:25 November
695:25 November
536:Doordarshan
516:nanoseconds
426:Tarun Gogoi
400:Kapil Sibal
315:Calculation
278:Madras Time
242:Bombay Time
187:Bombay Time
163:Madras Time
159:British era
117:time offset
18:Indian Time
1545:Time zones
1529:Categories
1395:Uzbekistan
1370:Tajikistan
1285:Kyrgyzstan
1265:Kazakhstan
1185:Bangladesh
1175:Azerbaijan
647:2 December
623:References
526:recorders.
432:and other
396:Parliament
287:1802–1906
269:1884–1948
251:1884–1955
227:Time Zone
54:UTC offset
1481:Hong Kong
1435:Palestine
1360:Sri Lanka
1355:Singapore
1235:Indonesia
1059:18 August
886:The Hindu
673:1 January
668:The Hindu
612:UTC+05:30
602:Time zone
477:New Delhi
453:UTC+05:00
449:UTC+06:00
415:Chaibagan
290:Railways
272:Official
254:Official
247:UTC+04:51
199:UTC+05:30
121:UTC+05:30
115:, with a
109:time zone
107:, is the
63:UTC+05:30
48:Time zone
1504:Category
1425:Abkhazia
1375:Thailand
1330:Pakistan
1310:Mongolia
1305:Maldives
1300:Malaysia
1200:Cambodia
1035:ndtv.com
864:19 April
838:19 April
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779:BBC News
617:Zoneinfo
550:See also
236:Purpose
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1315:Myanmar
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721:27 June
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347:) and
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1340:Qatar
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524:phase
512:pico-
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1086:2006
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1017:2018
992:2008
959:2006
929:2006
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866:2022
840:2022
832:Blog
811:2022
786:2006
753:2006
723:2021
697:2006
675:2023
649:2006
606:list
534:and
522:and
514:and
230:UTC
214:1971
212:and
185:and
177:and
1457:and
566:Ist
499:ATA
417:or
119:of
101:IST
84:DST
76:IST
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