38:
304:
On
September 24, 2020, Yukon switched to the Mountain Standard Time year-round. Therefore, clocks in Yukon and Alberta are the same in the winter, and Alberta is one hour ahead in summer. Previously, the territory had used the Pacific Time Zone with daylight saving time: UTC−8 in winter and UTC−7 in
1010:
The specification for the
Mountain Time Zone in the United States is set forth at 49 CFR 71.8. The boundary between Central and Mountain time zones is set forth at 49 CFR 71.7, and the boundary between Mountain and Pacific time zones is set forth at 49 CFR
991:
1247:
246:
in the United States do not observe daylight saving time (DST), and during the spring, summer, and autumn months they are on the same time as
1184:
1614:
1240:
254:, most of which lies within Arizona but extends into Utah and New Mexico (which do observe DST), does observe DST, although the
1196:
1172:
430:
1233:
600:
426:
422:
326:
1530:
608:
372:
1299:
1281:
620:
592:
1037:
809:
596:
155:
718:
628:
616:
612:
604:
588:
119:
1578:
815:
624:
467:
266:
418:
1568:
1535:
929:
946:
1609:
1604:
673:
652:
572:
1110:
209:("Pacific Zone"). In the United States and Canada, the Mountain Time Zone is to the east of the
1513:
1115:
973:
790:
648:
568:
564:
560:
533:
1084:
1059:
1032:
1120:
765:
644:
542:
436:
322:
292:
247:
147:
1406:
855:
746:
448:
131:
97:
394:
8:
1599:
1181:
731:
385:
143:
1495:
1477:
784:
760:
414:
1459:
1441:
1423:
1352:
1334:
968:
934:
904:
876:
862:
842:
795:
699:
688:
678:
549:
513:
410:
333:
309:
214:
210:
711:
1317:
924:
897:
869:
741:
736:
664:
Alphabetical list of major cities located within the
Mountain Time Zone. Cities in
344:
316:
262:
255:
190:
1205:
704:
1200:
1193:
1188:
1176:
962:
890:
848:
186:
139:
1215:
332:
One territory and one province are split between the
Mountain Time Zone and the
308:
One province and one territory are split between the
Mountain Time Zone and the
283:
One province and two territories are fully contained in the
Mountain Time Zone:
258:, as well as some Arizona state offices lying within the Navajo Nation, do not.
1573:
1563:
1220:
1169:
939:
911:
778:
524:
376:
366:
278:
1225:
413:: Observes Daylight Savings Time, only in northwestern border municipalities (
1593:
1545:
1540:
1523:
1518:
1506:
1501:
1488:
1483:
1470:
1465:
1452:
1447:
1434:
1429:
1416:
1411:
1399:
1394:
1381:
1376:
1363:
1358:
1345:
1340:
1327:
1322:
1310:
1305:
1292:
1287:
978:
883:
505:
251:
135:
127:
123:
115:
71:
61:
220:
In some areas, starting in 2007, the local time changes from MST to MDT at 2
683:
634:
584:
452:
444:
353:
349:
919:
835:
724:
827:
820:
801:
486:
443:): three of the four islands have the same time as Mountain Time Zone:
194:
161:
In the United States and Canada, this time zone is generically called
1256:
151:
150:. In the United States, the exact specification for the location of
29:
1210:
772:
755:
578:
476:
1373:(Arizona, Sonora, Yukon, and Northeastern British Columbia only)
693:
501:
496:
481:
405:
390:
340:
287:
243:
37:
751:
556:
538:
529:
440:
400:
239:
185:) when observing daylight saving time. The term refers to the
1085:"49 CFR 71.9 Boundary line between mountain and Pacific zones"
1060:"49 CFR 71.7 Boundary line between central and mountain zones"
512:
Three states are split between the
Mountain Time Zone and the
1141:
954:
640:
548:
Five states are split between the
Mountain Time Zone and the
520:
297:
491:
472:
Six states are fully contained in the
Mountain Time Zone:
154:
and the dividing lines between zones is set forth in the
228:
am MDT on the second Sunday in March and returns at 2
992:
Effects of time zones on North
American broadcasting
130:) is in effect, and by subtracting six hours during
552:. The following locations observe Mountain Time:
516:. The following locations observe Mountain Time:
1591:
1444:(parts of Nunavut, Ontario, and the Caribbean)
1255:
397:municipality, which uses the Central Time Zone.
138:). The clock time in this zone is based on the
504:(does not use daylight saving time except for
269:is the largest metropolitan area in the zone.
261:The largest city in the Mountain Time Zone is
1241:
1194:History of U.S. time zones and UTC conversion
319:– northeastern and southeastern regions
204:
198:
197:. In Mexico, this time zone is known as the
659:
375:, with certain exceptions. The following
118:keeps time by subtracting seven hours from
1248:
1234:
379:have the same time as Mountain Time Zone:
104:DST is observed in some of this time zone.
1111:"Arizona Says No to Daylight-Saving Time"
371:As of October 30, 2022, Mexico abandoned
236:am MST on the first Sunday in November.
1108:
1592:
1276:Hours from UTC: Daylight saving time
1229:
668:do not observe daylight saving time:
177:) when observing standard time, and
1004:
13:
14:
1626:
1163:
587:: the southwest corner counties (
461:
36:
1615:Time zones in the United States
1109:Robbins, Ted (March 11, 2007).
619:) observe MST. The counties of
1134:
1102:
1077:
1052:
1025:
1:
1273:Hours from UTC: Standard time
1018:
1211:Official times across Mexico
7:
1089:Code of Federal Regulations
1064:Code of Federal Regulations
1038:Code of Federal Regulations
1033:"49 CFR 71.8 Mountain zone"
985:
810:La Paz, Baja California Sur
156:Code of Federal Regulations
10:
1631:
1187:February 15, 2009, at the
1175:December 24, 2015, at the
1142:"HOME - Yukon Legislation"
719:Colorado Springs, Colorado
465:
431:Práxedis Gilberto Guerrero
364:
276:
120:Coordinated Universal Time
88:13:12, September 20, 2024
83:12:12, September 20, 2024
16:Time zone of North America
1579:Time in the United States
1556:
1531:Saint Pierre and Miquelon
1462:(other states/provinces)
1426:(other states/provinces)
1391:(other states/provinces)
1355:(other states/provinces)
1264:
816:Lake Havasu City, Arizona
468:Time in the United States
360:
272:
267:Phoenix metropolitan area
103:
95:
82:
77:
67:
57:
52:
35:
28:
23:
1569:Time in the Danish Realm
997:
930:Rapid City, South Dakota
660:Major metropolitan areas
46: Mountain Time Zone
1199:August 8, 2011, at the
674:Albuquerque, New Mexico
213:and to the west of the
169:). Specifically, it is
1116:Weekend Edition Sunday
974:West Valley City, Utah
791:Fort Collins, Colorado
242:in Mexico and most of
205:
199:
179:Mountain Daylight Time
171:Mountain Standard Time
1121:National Public Radio
947:San Luis Río Colorado
766:Westminster, Colorado
437:Revillagigedo Islands
373:daylight savings time
323:Northwest Territories
293:Northwest Territories
248:Pacific Daylight Time
148:Greenwich Observatory
1206:Canada time zone map
856:Metropolitan Phoenix
747:Centennial, Colorado
449:San Benedicto Island
200:tiempo de la montaña
132:daylight saving time
1480:(Natashquan River)
1170:World time zone map
732:Metropolitan Denver
651:, and northwestern
581:: western one third
386:Baja California Sur
189:, which range from
144:105th meridian west
1498:(other provinces)
1337:(parts of Alaska)
1302:(parts of Alaska)
1182:U.S. time zone map
785:Flagstaff, Arizona
761:Lakewood, Colorado
532:: the majority of
112:Mountain Time Zone
24:Mountain Time Zone
1587:
1586:
1551:
1550:
1146:Yukon Legislation
969:West Jordan, Utah
935:Red Deer, Alberta
905:Surprise, Arizona
877:Glendale, Arizona
863:Chandler, Arizona
843:Missoula, Montana
796:Greeley, Colorado
700:Cheyenne, Wyoming
689:Boulder, Colorado
679:Billings, Montana
550:Central Time Zone
514:Pacific Time Zone
395:Bahía de Banderas
393:: except for the
334:Central Time Zone
310:Pacific Time Zone
215:Central Time Zone
211:Pacific Time Zone
108:
107:
1622:
1267:
1266:
1259:in North America
1250:
1243:
1236:
1227:
1226:
1157:
1156:
1154:
1152:
1138:
1132:
1131:
1129:
1127:
1106:
1100:
1099:
1097:
1095:
1081:
1075:
1074:
1072:
1070:
1056:
1050:
1049:
1047:
1045:
1029:
1012:
1008:
925:Pueblo, Colorado
898:Phoenix, Arizona
870:Gilbert, Arizona
742:Aurora, Colorado
737:Arvada, Colorado
345:Kitikmeot Region
317:British Columbia
263:Phoenix, Arizona
256:Hopi Reservation
235:
231:
227:
223:
208:
202:
191:British Columbia
45:
40:
21:
20:
1630:
1629:
1625:
1624:
1623:
1621:
1620:
1619:
1590:
1589:
1588:
1583:
1552:
1533:
1300:Hawaii–Aleutian
1282:Hawaii–Aleutian
1260:
1254:
1216:Canada time map
1201:Wayback Machine
1189:Wayback Machine
1177:Wayback Machine
1166:
1161:
1160:
1150:
1148:
1140:
1139:
1135:
1125:
1123:
1107:
1103:
1093:
1091:
1083:
1082:
1078:
1068:
1066:
1058:
1057:
1053:
1043:
1041:
1031:
1030:
1026:
1021:
1016:
1015:
1009:
1005:
1000:
988:
983:
963:Tucson, Arizona
891:Peoria, Arizona
849:Nogales, Sonora
662:
470:
464:
369:
363:
281:
275:
233:
229:
225:
221:
187:Rocky Mountains
140:mean solar time
87:
48:
47:
43:
17:
12:
11:
5:
1628:
1618:
1617:
1612:
1610:Time in Mexico
1607:
1605:Time in Canada
1602:
1585:
1584:
1582:
1581:
1576:
1574:Time in Mexico
1571:
1566:
1564:Time in Canada
1561:
1557:
1554:
1553:
1549:
1548:
1543:
1538:
1527:
1526:
1521:
1516:
1510:
1509:
1504:
1499:
1492:
1491:
1486:
1481:
1474:
1473:
1468:
1463:
1456:
1455:
1450:
1445:
1438:
1437:
1432:
1427:
1420:
1419:
1414:
1409:
1403:
1402:
1397:
1392:
1385:
1384:
1379:
1374:
1367:
1366:
1361:
1356:
1349:
1348:
1343:
1338:
1331:
1330:
1325:
1320:
1314:
1313:
1308:
1303:
1296:
1295:
1290:
1285:
1278:
1277:
1274:
1271:
1265:
1262:
1261:
1253:
1252:
1245:
1238:
1230:
1224:
1223:
1218:
1213:
1208:
1203:
1191:
1179:
1165:
1164:External links
1162:
1159:
1158:
1133:
1101:
1076:
1051:
1023:
1022:
1020:
1017:
1014:
1013:
1002:
1001:
999:
996:
995:
994:
987:
984:
982:
981:
976:
971:
966:
959:
951:
943:
940:Salt Lake City
937:
932:
927:
922:
917:
916:
915:
912:Tempe, Arizona
908:
901:
894:
887:
880:
873:
866:
852:
845:
840:
832:
824:
818:
813:
806:
798:
793:
788:
781:
779:El Paso, Texas
776:
770:
769:
768:
763:
758:
749:
744:
739:
729:
721:
716:
712:Ciudad Obregón
708:
702:
697:
691:
686:
681:
676:
670:
661:
658:
657:
656:
638:
637:: western half
632:
582:
576:
546:
545:
536:
534:Malheur County
527:
525:Southern Idaho
510:
509:
499:
494:
489:
484:
479:
466:Main article:
463:
460:
459:
458:
457:
456:
445:Socorro Island
434:
408:
403:
398:
388:
367:Time in Mexico
365:Main article:
362:
359:
358:
357:
347:
330:
329:
320:
302:
301:
295:
290:
279:Time in Canada
277:Main article:
274:
271:
158:at 49 CFR 71.
106:
105:
101:
100:
96:Observance of
93:
92:
80:
79:
75:
74:
69:
65:
64:
59:
55:
54:
50:
49:
42:
41:
33:
32:
26:
25:
15:
9:
6:
4:
3:
2:
1627:
1616:
1613:
1611:
1608:
1606:
1603:
1601:
1598:
1597:
1595:
1580:
1577:
1575:
1572:
1570:
1567:
1565:
1562:
1559:
1558:
1555:
1547:
1544:
1542:
1539:
1537:
1532:
1529:
1528:
1525:
1522:
1520:
1517:
1515:
1512:
1511:
1508:
1505:
1503:
1500:
1497:
1494:
1493:
1490:
1487:
1485:
1482:
1479:
1476:
1475:
1472:
1469:
1467:
1464:
1461:
1458:
1457:
1454:
1451:
1449:
1446:
1443:
1440:
1439:
1436:
1433:
1431:
1428:
1425:
1422:
1421:
1418:
1415:
1413:
1410:
1408:
1405:
1404:
1401:
1398:
1396:
1393:
1390:
1387:
1386:
1383:
1380:
1378:
1375:
1372:
1369:
1368:
1365:
1362:
1360:
1357:
1354:
1351:
1350:
1347:
1344:
1342:
1339:
1336:
1333:
1332:
1329:
1326:
1324:
1321:
1319:
1316:
1315:
1312:
1309:
1307:
1304:
1301:
1298:
1297:
1294:
1291:
1289:
1286:
1283:
1280:
1279:
1275:
1272:
1269:
1268:
1263:
1258:
1251:
1246:
1244:
1239:
1237:
1232:
1231:
1228:
1222:
1221:U.S. time map
1219:
1217:
1214:
1212:
1209:
1207:
1204:
1202:
1198:
1195:
1192:
1190:
1186:
1183:
1180:
1178:
1174:
1171:
1168:
1167:
1147:
1143:
1137:
1122:
1118:
1117:
1112:
1105:
1090:
1086:
1080:
1065:
1061:
1055:
1040:
1039:
1034:
1028:
1024:
1007:
1003:
993:
990:
989:
980:
979:Yuma, Arizona
977:
975:
972:
970:
967:
965:
964:
960:
958:
956:
952:
950:
948:
944:
941:
938:
936:
933:
931:
928:
926:
923:
921:
918:
914:
913:
909:
907:
906:
902:
900:
899:
895:
893:
892:
888:
886:
885:
884:Mesa, Arizona
881:
879:
878:
874:
872:
871:
867:
865:
864:
860:
859:
858:
857:
853:
851:
850:
846:
844:
841:
839:
837:
833:
831:
829:
825:
822:
819:
817:
814:
812:
811:
807:
805:
803:
799:
797:
794:
792:
789:
787:
786:
782:
780:
777:
774:
771:
767:
764:
762:
759:
757:
753:
750:
748:
745:
743:
740:
738:
735:
734:
733:
730:
728:
726:
722:
720:
717:
715:
713:
709:
706:
705:Ciudad Juárez
703:
701:
698:
695:
692:
690:
687:
685:
682:
680:
677:
675:
672:
671:
669:
667:
654:
650:
646:
642:
639:
636:
633:
630:
626:
622:
618:
614:
610:
606:
602:
601:Golden Valley
598:
594:
590:
586:
583:
580:
577:
574:
570:
566:
562:
558:
555:
554:
553:
551:
544:
543:West Wendover
540:
537:
535:
531:
528:
526:
522:
519:
518:
517:
515:
507:
506:Navajo Nation
503:
500:
498:
495:
493:
490:
488:
485:
483:
480:
478:
475:
474:
473:
469:
462:United States
454:
450:
446:
442:
438:
435:
432:
428:
424:
420:
416:
412:
409:
407:
404:
402:
399:
396:
392:
389:
387:
384:
383:
382:
381:
380:
378:
374:
368:
355:
351:
348:
346:
342:
339:
338:
337:
335:
328:
324:
321:
318:
315:
314:
313:
311:
306:
299:
296:
294:
291:
289:
286:
285:
284:
280:
270:
268:
264:
259:
257:
253:
252:Navajo Nation
249:
245:
241:
237:
218:
216:
212:
207:
206:zona Pacífico
201:
196:
192:
188:
184:
180:
176:
172:
168:
164:
163:Mountain Time
159:
157:
153:
149:
145:
141:
137:
133:
129:
125:
124:standard time
121:
117:
116:North America
113:
102:
99:
94:
91:
86:
81:
76:
73:
70:
66:
63:
60:
56:
51:
39:
34:
31:
27:
22:
19:
1534:and most of
1514:Newfoundland
1407:Saskatchewan
1388:
1370:
1284:(in Hawaii)
1151:February 16,
1149:. Retrieved
1145:
1136:
1124:. Retrieved
1114:
1104:
1092:. Retrieved
1088:
1079:
1067:. Retrieved
1063:
1054:
1042:. Retrieved
1036:
1027:
1006:
961:
953:
945:
910:
903:
896:
889:
882:
875:
868:
861:
854:
847:
834:
826:
808:
800:
783:
723:
710:
684:Boise, Idaho
665:
663:
635:South Dakota
585:North Dakota
547:
511:
471:
453:Roca Partida
370:
356:and vicinity
354:Lloydminster
350:Saskatchewan
331:
307:
303:
282:
260:
238:
219:
182:
178:
174:
170:
166:
162:
160:
111:
109:
89:
84:
78:Current time
18:
920:Provo, Utah
707:, Chihuahua
232:am MDT to 1
224:am MST to 3
122:(UTC) when
1600:Time zones
1594:Categories
1257:Time zones
1094:October 7,
1069:October 7,
1044:October 7,
1019:References
828:Los Mochis
821:Lethbridge
802:Hermosillo
631:are split.
487:New Mexico
195:New Mexico
152:time zones
53:UTC offset
1536:Greenland
1270:Time zone
957:, Nayarit
838:, Sinaloa
830:, Sinaloa
823:, Alberta
775:, Alberta
727:, Sinaloa
696:, Alberta
653:Culberson
609:Hettinger
427:Guadalupe
419:Ascensión
411:Chihuahua
136:UTC−06:00
128:UTC−07:00
72:UTC−06:00
62:UTC−07:00
30:Time zone
1560:See also
1496:Atlantic
1478:Atlantic
1389:Mountain
1371:Mountain
1197:Archived
1185:Archived
1173:Archived
1126:June 18,
986:See also
949:, Sonora
836:Mazatlán
804:, Sonora
773:Edmonton
756:Colorado
725:Culiacán
714:, Sonora
655:Counties
649:Hudspeth
621:McKenzie
593:Billings
579:Nebraska
575:Counties
573:Hamilton
477:Colorado
327:Tungsten
325:–
305:summer.
300:(no DST)
1460:Eastern
1442:Eastern
1424:Central
1353:Pacific
1335:Pacific
694:Calgary
645:El Paso
569:Greeley
565:Wallace
561:Sherman
502:Arizona
497:Wyoming
482:Montana
406:Sinaloa
391:Nayarit
341:Nunavut
288:Alberta
244:Arizona
146:of the
142:at the
1318:Alaska
942:, Utah
752:Denver
627:, and
597:Bowman
557:Kansas
539:Nevada
530:Oregon
441:Colima
429:, and
423:Juárez
401:Sonora
377:states
361:Mexico
273:Canada
265:; the
250:. The
240:Sonora
234:
230:
226:
222:
44:
1524:−2:30
1519:−3:30
1011:71.9.
998:Notes
955:Tepic
641:Texas
629:Sioux
617:Stark
613:Slope
605:Grant
589:Adams
521:Idaho
415:Janos
298:Yukon
1153:2022
1128:2012
1096:2011
1071:2011
1046:2011
666:bold
625:Dunn
571:and
492:Utah
451:and
110:The
1306:−10
1293:−10
1288:−10
203:or
193:to
183:MDT
175:MST
114:of
98:DST
90:MDT
85:MST
68:MDT
58:MST
1596::
1546:−2
1541:−3
1507:−3
1502:−4
1489:−4
1484:−4
1471:−4
1466:−5
1453:−5
1448:−5
1435:−5
1430:−6
1417:−6
1412:−6
1400:−6
1395:−7
1382:−7
1377:−7
1364:−7
1359:−8
1346:−8
1341:−8
1328:−8
1323:−9
1311:−9
1144:.
1119:.
1113:.
1087:.
1062:.
1035:.
754:,
647:,
643::
623:,
615:,
611:,
607:,
603:,
599:,
595:,
591:,
567:,
563:,
559::
541::
523::
447:,
425:,
421:,
417:,
352::
343::
336::
312::
217:.
167:MT
1249:e
1242:t
1235:v
1155:.
1130:.
1098:.
1073:.
1048:.
508:)
455:.
439:(
433:)
181:(
173:(
165:(
134:(
126:(
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
