664:, which is in the southeast panhandle). Thus, the westernmost locales of the Alaska Time Zone are off by up to 169°30′ − 135° = 34°30′ from local solar time, or slightly more than 2 hours and 17 minutes. At noon Alaskan Time at a location just east of 169°30′ W, local solar time is only about 9:42 a.m. The sun will not reach culmination for another 2 hours and 18 minutes.
70:
678:
Very few people notice this, however, as these locations are virtually uninhabited, and for the very few people who do live there, the long days in the summer and short days in the winter make the sunrise and sunset times less important than areas closer to the equator. By contrast, in Juneau, which
712:
The territory of the state of Alaska spans almost as much longitude as the contiguous United States (57.5° vs. 57.6°) so the use of only two time zones will inevitably lead to some distortions. Alaska would naturally fall into five time zones, with the greatest territory more correctly in UTC−10:00
698:, one hour further west from the solar time for UTC−09:00. Thus, Anchorage is one solar hour behind the legal time zone and observes daylight saving time as well for a two-hour discrepancy between legal time and solar time. Some local residents refer to this phenomenon as "double daylight time".
218:
Effective from 2007, the local time changes from AKST to AKDT at 02:00 LST (local standard time) to 03:00 LDT (local daylight time) on the second Sunday in March and returns at 02:00 LDT to 01:00 LST on the first Sunday in
November. As such, Alaska spends most of the year on daylight saving time
597:
to define each time zone. The United States
Standard Alaska Time was designated as UTC−10:00. Some references prior to 1967 refer to this zone as Central Alaska Standard Time (CAT) or as Alaska Standard Time (AST). In 1966, the
705:, the same circumstances cause sunset to occur at 12:47 a.m. the next calendar day and the solar sunset is at 10:47 p.m. Even without daylight saving time, another anomaly is that on the winter solstice in
602:
renamed the UTC−10:00 zone to Alaska-Hawaii
Standard Time (AHST), effective April 1, 1967. This zone was renamed in 1983 to Hawaii-Aleutian Standard Time when the majority of Alaska was moved out of the zone.
761:
1047:
586:
that covered much of
Central Alaska in the early 20th century, and a zone based on UTC−09:00 zone that has covered all of the state except the Aleutian Islands since 1983.
641:
With the consolidation of Alaska's four time zones into two in 1983, the entire state was in either a zone based on UTC−09:00 or UTC−10:00. The Yukon Time Zone based on
1409:
1040:
1033:
675:
at the extreme westerly points of the
Alaskan time zone will be only 8:42 a.m., nearly 3 hours and 18 minutes behind clock time.
987:
657:
east of 169°30′ W, that is, the entire state minus the westernmost portions of the
Aleutian Islands. Solar time zones are 15° wide.
905:
725:. But political and logistical considerations have led to the use of two time zones, leading to the distortions mentioned above.
967:
594:
1099:
1081:
201:
40:
1020:
1404:
212:
143:
638:. In 1975, the Yukon Territory switched to Pacific Standard Time, leaving Yakutat the only land area in the zone.
1378:
1330:
690:, visitors from more southerly latitudes are often surprised to see the sun set at 11:41 p.m. on the summer
557:
1368:
1335:
939:
766:
709:, the sunrise is after "noon" clock time, at 12:02 p.m., about 4 hours before sunset at 3:56 p.m.
1313:
46:
This article is about the time zone with daylight change in North
America. For the static time zone, see
447:
335:
171:
1206:
668:
631:
151:
121:
33:
1399:
695:
167:
1295:
1277:
1188:
1170:
944:
1259:
1241:
1223:
1152:
1134:
739:
734:
702:
687:
623:
590:
208:
182:
619:
599:
278:
197:
39:"Alaska time" redirects here. For time in the Aleutian Islands in southwestern Alaska, see
756:
615:
607:
456:
403:
344:
269:
163:
995:
796:
1373:
1363:
913:
862:
771:
744:
661:
228:
1345:
1340:
1323:
1318:
1306:
1301:
1288:
1283:
1270:
1265:
1252:
1247:
1234:
1229:
1216:
1211:
1199:
1194:
1181:
1176:
1163:
1158:
1145:
1140:
1127:
1122:
1110:
1105:
1092:
1087:
817:
642:
635:
583:
389:
369:
357:
328:
312:
159:
147:
95:
85:
47:
1393:
718:
671:), this effect becomes even more apparent. For example, on June 12 at noon AKDT, the
139:
714:
706:
627:
480:
427:
373:
841:
818:"Time zone names- Central Africa Time, Central Alaskan Standard Time(until 1967)"
17:
582:
Two time zones have been referred to as the "Alaska Time Zone": a zone based on
155:
1025:
680:
672:
1056:
776:
61:
660:
UTC−09:00 time corresponds to the solar time at 9 × 15° = 135° W (roughly,
69:
722:
691:
606:
Prior to 1983, the current Alaska Time Zone (UTC−09:00) was known as the
971:
610:, observing Yukon Standard Time (YST). This time zone included Canada's
654:
540:
178:
883:
611:
262:
1173:(Arizona, Sonora, Yukon, and Northeastern British Columbia only)
683:
occurs around 11:57 a.m., very close to noon on the clock.
1029:
797:"Full text - Daylight Saving Time - U.S. Law, 1918 & 1942"
653:
The Alaska Time Zone applies to the territory of the state of
966:
842:"US CODE: Title 15,263. Designation of zone standard times"
694:
while the solar time is 9:41 p.m. Anchorage is at
762:
Effects of time zones on North
American broadcasting
667:
When UTC−08:00 is applied in the summer (because of
253:Wednesday, July 15, 1741 – Friday, October 6, 1867
119:
101:
91:
81:
76:
55:
177:The zone includes nearly all of the U.S. state of
192:daylight saving time: Alaska Daylight Time (AKDT)
645:was later renamed the Alaska Time Zone in 1984.
1244:(parts of Nunavut, Ontario, and the Caribbean)
1021:The official U.S. time for the Alaska Time Zone
679:is much closer to the 135° west meridian, mean
626:, while most of the interior was on UTC−10:00.
215:is the largest metropolitan area in the zone.
863:"Time zone names- Alaska-Hawaii Standard Time"
204:, one hour behind the remainder of the state.
32:For time zones with the abbreviation AST, see
1041:
207:The largest city in the Alaskan Time Zone is
8:
836:
834:
162:). The clock time in this zone is based on
1048:
1034:
1026:
189:standard time: Alaska Standard Time (AKST)
128:DST is observed throughout this time zone.
52:
933:
931:
1066:
988:"Alaskans Double Their Daylight Savings"
981:
979:
614:and a small portion of Alaska including
232:
788:
526:UTC−11:00 (Nome, and Aleutian Islands)
721:in UTC–13:00 as sunset can be late as
630:and the Aleutians previously observed
386:January 20, 1942 – September 30, 1945
1076:Hours from UTC: Daylight saving time
7:
938:Turner, Wallace (November 1, 1983).
440:September 30, 1945 – March 31, 1967
940:"Alaska's Four Time Zones Now Two"
25:
717:more correctly in UTC–12:00 and
553:UTC−10:00 (in Aleutian Islands)
304:UTC−11:36 (in Aleutian Islands)
286:Friday, October 18, 1867 – 1900
68:
1410:Time zones in the United States
904:Benson, Carl (March 25, 1983).
142:by subtracting nine hours from
986:Rozell, Ned (March 28, 1996).
595:Interstate Commerce Commission
1:
1073:Hours from UTC: Standard time
315:(including Aleutian Islands)
570:(except in Aleutian Islands)
496:UTC−08:00 (Panhandle Areas)
443:UTC−08:00 (Panhandle Areas)
520:Alaska–Hawaii Standard Time
219:rather than standard time.
213:Anchorage Metropolitan Area
181:and is one hour behind the
1426:
884:"United States Time Notes"
226:
144:Coordinated Universal Time
45:
38:
31:
1379:Time in the United States
1356:
1331:Saint Pierre and Miquelon
1262:(other states/provinces)
1226:(other states/provinces)
1191:(other states/provinces)
1155:(other states/provinces)
1064:
906:"Time Zones Article #597"
558:Hawaii-Aleutian Time Zone
535:
492:
439:
385:
324:
296:
285:
267:
252:
127:
112:07:55, 20 September 2024
107:06:55, 20 September 2024
106:
67:
60:
41:Hawaii–Aleutian Time Zone
1369:Time in the Danish Realm
622:communities were in the
483:, and Aleutian Islands)
430:, and Aleutian Islands)
376:, and Aleutian Islands)
325:1918 – January 19, 1942
767:International Date Line
593:of 1918 authorized the
506:UTC−09:00 (in Yakutat)
500:Pacific Standard Time
493:April 1, 1967 – 1983
448:Pacific Standard Time
336:Pacific Standard Time
294:UTC−09:01 (in Sitka)
172:Greenwich Observatory
992:Alaska Science Forum
910:Alaska Science Forum
713:and UTC−11:00, with
669:daylight saving time
632:Bering Standard Time
575:Alaska Daylight Time
530:Bering Standard Time
487:Bering Standard Time
473:Alaska Standard Time
380:Bering Standard Time
363:Alaska Standard Time
319:Alaska Standard Time
289:(Gregorian Calendar)
242:Time offset from UTC
202:Hawaii–Aleutian Time
152:daylight saving time
1405:Geography of Alaska
1280:(Natashquan River)
916:on January 15, 2012
510:Yukon Standard Time
463:Yukon Standard Time
351:Yukon Standard Time
168:135th meridian west
27:Time zone in Alaska
1298:(other provinces)
1137:(parts of Alaska)
1102:(parts of Alaska)
998:on January 6, 2012
945:The New York Times
392:(Panhandle Areas)
331:(Panhandle Areas)
1387:
1386:
1351:
1350:
740:Fairbanks, Alaska
735:Anchorage, Alaska
624:Pacific Time Zone
591:Standard Time Act
580:
579:
256:(Julian Calendar)
209:Anchorage, Alaska
183:Pacific Time Zone
136:Alaska Time Zone
132:
131:
18:Alaskan Time Zone
16:(Redirected from
1417:
1067:
1059:in North America
1050:
1043:
1036:
1027:
1008:
1007:
1005:
1003:
994:. Archived from
983:
974:
964:
958:
957:
955:
953:
935:
926:
925:
923:
921:
912:. Archived from
901:
895:
894:
892:
890:
880:
874:
873:
871:
869:
859:
853:
852:
850:
848:
838:
829:
828:
826:
824:
814:
808:
807:
805:
803:
793:
620:Alaska Panhandle
600:Uniform Time Act
571:
547:Alaska Time Zone
396:Pacific War Time
291:
279:Aleutian Islands
258:
233:
198:Aleutian Islands
158:is eight hours (
72:
56:Alaska Time Zone
53:
21:
1425:
1424:
1420:
1419:
1418:
1416:
1415:
1414:
1390:
1389:
1388:
1383:
1352:
1333:
1100:Hawaii–Aleutian
1082:Hawaii–Aleutian
1060:
1054:
1017:
1012:
1011:
1001:
999:
985:
984:
977:
965:
961:
951:
949:
937:
936:
929:
919:
917:
903:
902:
898:
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886:
882:
881:
877:
867:
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839:
832:
822:
820:
816:
815:
811:
801:
799:
795:
794:
790:
785:
757:Alaska Purchase
753:
731:
651:
612:Yukon Territory
608:Yukon Time Zone
569:
565:2007 − Present
536:1983 – Present
434:Bering War Time
420:Alaska War Time
298:Local Mean Time
287:
270:Local Mean Time
254:
231:
225:
164:mean solar time
111:
51:
44:
37:
28:
23:
22:
15:
12:
11:
5:
1423:
1421:
1413:
1412:
1407:
1402:
1392:
1391:
1385:
1384:
1382:
1381:
1376:
1374:Time in Mexico
1371:
1366:
1364:Time in Canada
1361:
1357:
1354:
1353:
1349:
1348:
1343:
1338:
1327:
1326:
1321:
1316:
1310:
1309:
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1120:
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1103:
1096:
1095:
1090:
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1077:
1074:
1071:
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1062:
1061:
1055:
1053:
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1038:
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1024:
1023:
1016:
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975:
959:
927:
896:
875:
854:
830:
809:
787:
786:
784:
781:
780:
779:
774:
772:Time in Alaska
769:
764:
759:
752:
749:
748:
747:
745:Juneau, Alaska
742:
737:
730:
727:
650:
647:
578:
577:
572:
566:
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561:
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550:
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539:UTC−09:00 (in
537:
533:
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507:
503:
502:
497:
494:
490:
489:
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455:UTC−09:00 (in
452:
451:
444:
441:
437:
436:
431:
423:
422:
417:
413:
412:
410:Yukon War Time
407:
402:UTC−08:00 (in
399:
398:
393:
387:
383:
382:
377:
366:
365:
360:
354:
353:
348:
343:UTC−09:00 (in
340:
339:
332:
326:
322:
321:
316:
310:
306:
305:
301:
300:
295:
292:
283:
282:
277:UTC+12:24 (in
274:
273:
266:
261:UTC+14:59 (in
259:
250:
249:
244:
239:
229:Time in Alaska
227:Main article:
224:
221:
194:
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190:
130:
129:
125:
124:
120:Observance of
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948:. p. A25
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719:Cape Wrangell
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257:
251:
248:
245:
243:
240:
238:
237:Period in use
235:
234:
230:
222:
220:
216:
214:
210:
205:
203:
199:
191:
188:
187:
186:
184:
180:
175:
173:
169:
165:
161:
157:
153:
149:
145:
141:
140:standard time
137:
126:
123:
118:
115:
110:
105:
100:
97:
94:
90:
87:
84:
80:
75:
71:
66:
63:
59:
54:
49:
42:
35:
30:
19:
1334:and most of
1314:Newfoundland
1207:Saskatchewan
1117:
1084:(in Hawaii)
1000:. Retrieved
996:the original
991:
962:
950:. Retrieved
943:
918:. Retrieved
914:the original
909:
899:
887:. Retrieved
878:
866:. Retrieved
857:
845:. Retrieved
821:. Retrieved
812:
800:. Retrieved
791:
711:
700:
685:
677:
666:
659:
652:
640:
605:
588:
581:
574:
556:
546:
529:
519:
509:
499:
486:
472:
462:
446:
433:
419:
409:
395:
379:
362:
350:
334:
318:
309:1900 – 1918
297:
288:
268:
255:
247:Name of time
246:
241:
236:
217:
206:
196:The western
195:
176:
135:
133:
113:
108:
102:Current time
29:
479:UTC−11:00 (
426:UTC−10:00 (
156:time offset
1400:Time zones
1394:Categories
1057:Time zones
1002:January 9,
920:January 9,
783:References
681:solar noon
673:solar time
568:UTC−08:00
516:UTC−10:00
469:UTC−10:00
416:UTC−09:00
150:). During
77:UTC offset
34:AST (time)
1336:Greenland
1070:Time zone
777:Time zone
703:Fairbanks
688:Anchorage
649:Anomalies
643:UTC−09:00
636:UTC−11:00
584:UTC−10:00
390:UTC−07:00
370:UTC−11:00
358:UTC−10:00
329:UTC−08:00
313:UTC−09:00
160:UTC−08:00
148:UTC−09:00
138:observes
96:UTC−08:00
86:UTC−09:00
62:Time zone
48:UTC−09:00
1360:See also
1296:Atlantic
1278:Atlantic
1189:Mountain
1171:Mountain
952:June 28,
889:June 18,
868:June 18,
847:June 18,
823:June 18,
802:June 18,
751:See also
723:midnight
692:solstice
200:observe
1260:Eastern
1242:Eastern
1224:Central
1153:Pacific
1135:Pacific
1015:Sources
616:Yakutat
457:Yakutat
404:Yakutat
345:Yakutat
223:History
170:of the
166:at the
1118:Alaska
970:
729:Cities
696:150° W
662:Juneau
655:Alaska
618:. The
541:Juneau
211:. The
179:Alaska
1324:−2:30
1319:−3:30
968:Stat.
263:Sitka
1004:2012
972:1153
954:2023
922:2012
891:2012
870:2012
849:2012
825:2012
804:2012
715:Adak
707:Nome
628:Nome
589:The
481:Nome
428:Nome
374:Nome
154:its
134:The
114:AKDT
109:AKST
92:AKDT
82:AKST
1106:−10
1093:−10
1088:−10
701:In
686:In
634:or
185:.
122:DST
1396::
1346:−2
1341:−3
1307:−3
1302:−4
1289:−4
1284:−4
1271:−4
1266:−5
1253:−5
1248:−5
1235:−5
1230:−6
1217:−6
1212:−6
1200:−6
1195:−7
1182:−7
1177:−7
1164:−7
1159:−8
1146:−8
1141:−8
1128:−8
1123:−9
1111:−9
990:.
978:^
942:.
930:^
908:.
833:^
543:)
459:)
406:)
347:)
281:)
265:)
174:.
1049:e
1042:t
1035:v
1006:.
956:.
924:.
893:.
872:.
851:.
827:.
806:.
372:(
146:(
50:.
43:.
36:.
20:)
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