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Iran Standard Time

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31: 1122: 1132: 1153: 551: 260:, depending on the precise timing of the equinox. (This is equivalent to 00:00 on 2 Farvardin, either 21 or 22 March.) Clocks moved forward at that time to 01:00 on 2 Farvardin (21 or 22 March). This spring change took place at the end of the day of 249:
for Iran Standard Time (52.5°E or GMT+3.5h). This resulted in the unique situation wherein the dates of DST transitions didn't fall on the same weekday each year as they do in most other countries.
278:, which corresponds to either 20 or 21 September. (Equivalently, at 00:00 on 31 Shahrivar, either 21 or 22 September). Clocks moved backward to 23:00 on 30 Shahrivar (20 or 21 September). 1087: 1036: 763: 1194: 1097: 1011: 221:). It was reintroduced from 21 March 2008. On 21 September 2022, Iran abolished DST and now observes standard time year-round. 700: 1056: 80: 846: 1092: 778: 756: 1187: 1051: 956: 631: 649: 1213: 1061: 70: 1006: 971: 926: 246: 230: 210: 195: 163: 100: 75: 1223: 1218: 1076: 896: 891: 786: 749: 206: 50: 1131: 1180: 1016: 991: 906: 886: 836: 806: 796: 257: 135: 85: 30: 1102: 981: 976: 856: 564: 1046: 996: 951: 931: 921: 821: 199: 675: 606: 1021: 936: 916: 801: 791: 265: 584: 1164: 1066: 1001: 966: 901: 881: 871: 831: 816: 811: 105: 1207: 1125: 1107: 1026: 986: 961: 941: 876: 851: 841: 826: 238: 155: 731: 946: 911: 866: 861: 1135: 696: 556: 17: 546: 531: 516: 512: 499: 484: 480: 467: 452: 448: 433: 429: 416: 403: 191: 130: 115: 95: 65: 60: 45: 585:"Time zone and daylight saving time for Iran – Tehran between 2010 and 2019" 275: 253: 187: 1152: 268: 709: 261: 242: 29: 650:"Culture of Iran: No-Rooz, The Iranian New Year at Present Times" 1160: 234: 745: 741: 1168: 229:
The dates of DST transitions in Iran were based on the
271:
and the most important festival in Iranian culture.
256:, which corresponds to either 20 or 21 March in the 1075: 1035: 777: 245:) as determined by astronomical calculation at the 27:Identifier for a time offset from UTC of +03:30 205:Between 2005 and 2008, by decree of President 1188: 757: 8: 194:. IRST is defined by the 52.5 degrees east 1195: 1181: 764: 750: 742: 274:DST likewise ended in Iran at 24:00 on 30 385: 285: 38: 732:"Time Changes in Tehran over the years" 576: 676:"Iran daylight saving time correction" 202:and is the official meridian of Iran. 198:, the same meridian which defines the 190:used in Iran. Iran uses a UTC offset 7: 1149: 1147: 674:Roozbeh Pournader (15 March 2003). 632:"Daylight Saving Time Ends in Iran" 252:DST started in Iran at 24:00 on 1 25: 1151: 1130: 1121: 1120: 549: 237:, which is in turn based on the 225:Daylight Saving Time transitions 607:"Iran Considers Abolishing DST" 1088:British Indian Ocean Territory 1: 1167:. You can help Knowledge by 81:Eastern European Summer Time 233:, the official calendar of 1240: 1146: 536:Iran Standard Time (IRST) 523:Iran Daylight Time (IRDT) 521:Iran Standard Time (IRST) 504:Iran Standard Time (IRST) 491:Iran Daylight Time (IRDT) 489:Iran Standard Time (IRST) 472:Iran Standard Time (IRST) 459:Iran Daylight Time (IRDT) 457:Iran Standard Time (IRST) 440:Iran Daylight Time (IRDT) 438:Iran Standard Time (IRST) 421:Iran Standard Time (IRST) 1116: 282:Recent and upcoming dates 837:East Timor (Timor-Leste) 1098:Cocos (Keeling) Islands 408:Tehran Mean Time (TMT) 209:, Iran did not observe 35:Time in the Middle East 1163:-related article is a 705:file, lines 1278–1299" 168: 392:Time offset from GMT 71:Eastern European Time 33: 1012:United Arab Emirates 699:(30 November 2018). 231:Solar Hijri calendar 211:daylight saving time 164:Daylight saving time 101:Arabia Standard Time 76:Israel Standard Time 1039:limited recognition 654:www.iranchamber.com 375:Thu, Sep 22, 00:00 372:Tue, Mar 22, 00:00 362:Wed, Sep 22, 00:00 359:Mon, Mar 22, 00:00 349:Mon, Sep 21, 00:00 346:Sat, Mar 21, 00:00 336:Sun, Sep 22, 00:00 333:Fri, Mar 22, 00:00 323:Sat, Sep 22, 00:00 320:Thu, Mar 22, 00:00 310:Fri, Sep 22, 00:00 307:Wed, Mar 22, 00:00 287: 207:Mahmoud Ahmadinejad 51:Egypt Standard Time 636:Livingintehran.com 286: 258:Gregorian calendar 215:Iran Daylight Time 172:Iran Standard Time 169: 136:Gulf Standard Time 121:Iran Standard Time 86:Israel Summer Time 1176: 1175: 1144: 1143: 1081:other territories 587:. Timeanddate.com 565:Iranian calendars 540: 539: 382:Time zone changes 379: 378: 167: 158:observed all year 141: 140: 16:(Redirected from 1231: 1197: 1190: 1183: 1155: 1148: 1134: 1124: 1123: 1093:Christmas Island 779:Sovereign states 766: 759: 752: 743: 736: 735: 728: 722: 721: 719: 717: 704: 693: 687: 686: 684: 682: 671: 665: 664: 662: 660: 646: 640: 639: 628: 622: 621: 619: 617: 603: 597: 596: 594: 592: 581: 559: 554: 553: 552: 386: 288: 200:Iranian calendar 162: 154: 151: 148: 145: 142: 39: 21: 18:Iranian meridian 1239: 1238: 1234: 1233: 1232: 1230: 1229: 1228: 1204: 1203: 1202: 1201: 1145: 1140: 1112: 1080: 1071: 1052:Northern Cyprus 1038: 1031: 773: 770: 740: 739: 730: 729: 725: 715: 713: 702: 695: 694: 690: 680: 678: 673: 672: 668: 658: 656: 648: 647: 643: 630: 629: 625: 615: 613: 611:timeanddate.com 605: 604: 600: 590: 588: 583: 582: 578: 573: 555: 550: 548: 545: 528:2022 – present 522: 515: 490: 483: 458: 451: 439: 432: 384: 284: 264:, which is the 227: 160: 159: 152: 149: 146: 143: 104: 84: 79: 74: 64: 63: 37: 28: 23: 22: 15: 12: 11: 5: 1237: 1235: 1227: 1226: 1221: 1216: 1206: 1205: 1200: 1199: 1192: 1185: 1177: 1174: 1173: 1156: 1142: 1141: 1139: 1138: 1128: 1117: 1114: 1113: 1111: 1110: 1105: 1100: 1095: 1090: 1084: 1082: 1073: 1072: 1070: 1069: 1064: 1059: 1054: 1049: 1043: 1041: 1033: 1032: 1030: 1029: 1024: 1019: 1014: 1009: 1004: 999: 994: 989: 984: 979: 974: 969: 964: 959: 954: 949: 944: 939: 934: 929: 924: 919: 914: 909: 904: 899: 894: 889: 884: 879: 874: 869: 864: 859: 854: 849: 844: 839: 834: 829: 824: 819: 814: 809: 804: 799: 794: 789: 783: 781: 775: 774: 771: 769: 768: 761: 754: 746: 738: 737: 723: 688: 666: 641: 623: 598: 575: 574: 572: 569: 568: 567: 561: 560: 544: 541: 538: 537: 534: 529: 525: 524: 519: 510: 506: 505: 502: 497: 493: 492: 487: 478: 474: 473: 470: 465: 461: 460: 455: 446: 442: 441: 436: 427: 423: 422: 419: 414: 410: 409: 406: 401: 397: 396: 393: 390: 389:Period in use 383: 380: 377: 376: 373: 370: 364: 363: 360: 357: 351: 350: 347: 344: 338: 337: 334: 331: 325: 324: 321: 318: 312: 311: 308: 305: 299: 298: 295: 292: 283: 280: 269:New Year's Day 226: 223: 213:(DST) (called 139: 138: 133: 128: 127:    124: 123: 118: 113: 112:    109: 108: 98: 93: 92:    89: 88: 68: 58: 57:    54: 53: 48: 43: 42:    26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 1236: 1225: 1222: 1220: 1217: 1215: 1212: 1211: 1209: 1198: 1193: 1191: 1186: 1184: 1179: 1178: 1172: 1170: 1166: 1162: 1157: 1154: 1150: 1137: 1133: 1129: 1127: 1119: 1118: 1115: 1109: 1106: 1104: 1101: 1099: 1096: 1094: 1091: 1089: 1086: 1085: 1083: 1078: 1074: 1068: 1065: 1063: 1062:South Ossetia 1060: 1058: 1055: 1053: 1050: 1048: 1045: 1044: 1042: 1040: 1034: 1028: 1025: 1023: 1020: 1018: 1015: 1013: 1010: 1008: 1005: 1003: 1000: 998: 995: 993: 990: 988: 985: 983: 980: 978: 975: 973: 970: 968: 965: 963: 960: 958: 955: 953: 950: 948: 945: 943: 940: 938: 935: 933: 930: 928: 925: 923: 920: 918: 915: 913: 910: 908: 905: 903: 900: 898: 895: 893: 890: 888: 885: 883: 880: 878: 875: 873: 870: 868: 865: 863: 860: 858: 855: 853: 850: 848: 845: 843: 840: 838: 835: 833: 830: 828: 825: 823: 820: 818: 815: 813: 810: 808: 805: 803: 800: 798: 795: 793: 790: 788: 785: 784: 782: 780: 776: 767: 762: 760: 755: 753: 748: 747: 744: 733: 727: 724: 712: 711: 706: 698: 692: 689: 677: 670: 667: 655: 651: 645: 642: 638:. 2022-09-21. 637: 633: 627: 624: 612: 608: 602: 599: 586: 580: 577: 570: 566: 563: 562: 558: 547: 542: 535: 533: 530: 527: 526: 520: 518: 514: 511: 508: 507: 503: 501: 498: 495: 494: 488: 486: 482: 479: 476: 475: 471: 469: 466: 463: 462: 456: 454: 450: 447: 444: 443: 437: 435: 431: 428: 425: 424: 420: 418: 415: 412: 411: 407: 405: 402: 399: 398: 395:Name of time 394: 391: 388: 387: 381: 374: 371: 369: 366: 365: 361: 358: 356: 353: 352: 348: 345: 343: 340: 339: 335: 332: 330: 327: 326: 322: 319: 317: 314: 313: 309: 306: 304: 301: 300: 296: 293: 290: 289: 281: 279: 277: 272: 270: 267: 263: 259: 255: 250: 248: 244: 240: 239:March equinox 236: 232: 224: 222: 220: 216: 212: 208: 203: 201: 197: 193: 189: 185: 181: 177: 173: 165: 157: 156:Standard time 137: 134: 132: 129: 126: 125: 122: 119: 117: 114: 111: 110: 107: 102: 99: 97: 94: 91: 90: 87: 82: 77: 72: 69: 67: 62: 59: 56: 55: 52: 49: 47: 44: 41: 40: 36: 32: 19: 1214:Time in Iran 1169:expanding it 1158: 1077:Dependencies 1007:Turkmenistan 972:Saudi Arabia 772:Time in Asia 726: 714:. Retrieved 708: 691: 679:. Retrieved 669: 657:. Retrieved 653: 644: 635: 626: 614:. Retrieved 610: 601: 589:. Retrieved 579: 509:2008 – 2022 496:2006 – 2007 477:1991 – 2005 464:1981 – 1990 445:1979 – 1980 426:1977 – 1978 413:1946 – 1977 404:UTC+03:25:44 400:before 1945 367: 354: 341: 328: 315: 302: 273: 251: 228: 218: 214: 204: 183: 179: 175: 171: 170: 120: 34: 1136:Asia portal 1037:States with 957:Philippines 897:South Korea 892:North Korea 787:Afghanistan 697:tz database 557:Iran portal 106:Turkey Time 1224:Iran stubs 1219:Time zones 1208:Categories 1017:Uzbekistan 992:Tajikistan 907:Kyrgyzstan 887:Kazakhstan 807:Bangladesh 797:Azerbaijan 716:1 December 681:1 December 659:1 February 571:References 294:DST Start 1103:Hong Kong 1057:Palestine 982:Sri Lanka 977:Singapore 857:Indonesia 532:UTC+03:30 517:UTC+04:30 513:UTC+03:30 500:UTC+03:30 485:UTC+04:30 481:UTC+03:30 468:UTC+03:30 453:UTC+04:30 449:UTC+03:30 434:UTC+05:00 430:UTC+04:00 417:UTC+03:30 276:Shahrivar 254:Farvardin 192:UTC+03:30 188:time zone 186:) is the 180:Iran Time 131:UTC+04:00 116:UTC+03:30 96:UTC+03:00 66:UTC+03:00 61:UTC+02:00 46:UTC+02:00 1126:Category 1047:Abkhazia 997:Thailand 952:Pakistan 932:Mongolia 927:Maldives 922:Malaysia 822:Cambodia 543:See also 297:DST End 247:meridian 196:meridian 166:observed 1022:Vietnam 937:Myanmar 917:Lebanon 847:Georgia 802:Bahrain 792:Armenia 266:Iranian 1067:Taiwan 1002:Turkey 967:Russia 902:Kuwait 882:Jordan 872:Israel 832:Cyprus 817:Brunei 812:Bhutan 710:GitHub 616:13 May 262:Nowruz 243:Nowruz 1159:This 1108:Macau 1027:Yemen 987:Syria 962:Qatar 942:Nepal 877:Japan 852:India 842:Egypt 827:China 591:9 May 291:Year 178:) or 1165:stub 1161:Iran 947:Oman 912:Laos 867:Iraq 862:Iran 718:2018 703:asia 683:2018 661:2016 618:2022 593:2010 368:2022 355:2021 342:2020 329:2019 316:2018 303:2017 235:Iran 219:IRDT 176:IRST 1079:and 217:or 1210:: 707:. 652:. 634:. 609:. 184:IT 1196:e 1189:t 1182:v 1171:. 765:e 758:t 751:v 734:. 720:. 701:" 685:. 663:. 620:. 595:. 241:( 182:( 174:( 161:▉ 153:▉ 150:▉ 147:▉ 144:▉ 103:/ 83:/ 78:/ 73:/ 20:)

Index

Iranian meridian

UTC+02:00
Egypt Standard Time
UTC+02:00
UTC+03:00
Eastern European Time
Israel Standard Time
Eastern European Summer Time
Israel Summer Time
UTC+03:00
Arabia Standard Time
Turkey Time
UTC+03:30
Iran Standard Time
UTC+04:00
Gulf Standard Time
Standard time
Daylight saving time
time zone
UTC+03:30
meridian
Iranian calendar
Mahmoud Ahmadinejad
daylight saving time
Solar Hijri calendar
Iran
March equinox
Nowruz
meridian

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