Time zones

A time zone depends not only on a UTC zone (there are 24 UTC zones based on longitude; see UTC time zone name), but also on politico-geographical regions that may have different rules on the observation of daylight saving time. Valid time zone names (not case sensitive) recognized by Microsoft Windows are listed in the following table. These values are available in the drop-down list on the Time Zone column in the Sites and Customers tables.

Available time zone information from the subkeys of the registry's: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Time Zones key.

1. Dateline Standard Time 50. FLE Standard Time
2. UTC-11 51. Israel Standard Time
3. Samoa Standard Time 52. E. Europe Standard Time
4. Hawaiian Standard Time 53. Arabic Standard Time
5. Alaskan Standard Time 54. Arab Standard Time
6. Pacific Standard Time (Mexico) 55. Russian Standard Time
7. Pacific Standard Time 56. E. Africa Standard Time
8. US Mountain Standard Time 57. Iran Standard Time
9. Mountain Standard Time (Mexico) 58. Arabian Standard Time
10. Mountain Standard Time 59. Azerbaijan Standard Time
11. Central America Standard Time 60. Mauritius Standard Time
12. Central Standard Time 61. Georgian Standard Time
13. Central Standard Time (Mexico) 62. Caucasus Standard Time
14. Canada Central Standard Time 63. Afghanistan Standard Time
15. SA Pacific Standard Time 64. Ekaterinburg Standard Time
16. Eastern Standard Time 65. Pakistan Standard Time
17. US Eastern Standard Time 66. West Asia Standard Time
18. Venezuela Standard Time 67. India Standard Time
19. Paraguay Standard Time 68. Sri Lanka Standard Time
20. Atlantic Standard Time 69. Nepal Standard Time
21. Central Brazilian Standard Time 70. Central Asia Standard Time
22. SA Western Standard Time 71. Bangladesh Standard Time
23. Pacific SA Standard Time 72. N. Central Asia Standard Time
24. Newfoundland Standard Time 73. Myanmar Standard Time
25. E. South America Standard Time 74. SE Asia Standard Time
26. Argentina Standard Time 75. North Asia Standard Time
27. SA Eastern Standard Time 76. China Standard Time
28. Greenland Standard Time 77. North Asia East Standard Time
29. Montevideo Standard Time 78. Singapore Standard Time
30. UTC-02 79. W. Australia Standard Time
31. Mid-Atlantic Standard Time 80. Taipei Standard Time
32. Azores Standard Time 81. Ulaanbaatar Standard Time
33. Cape Verde Standard Time 82. Tokyo Standard Time
34. Morocco Standard Time 83. Korea Standard Time
35. UTC 84. Yakutsk Standard Time
36. GMT Standard Time 85. Cen. Australia Standard Time
37. Greenwich Standard Time 86. AUS Central Standard Time
38. W. Europe Standard Time 87. E. Australia Standard Time
39. Central Europe Standard Time 88. AUS Eastern Standard Time
40. Romance Standard Time 89. West Pacific Standard Time
41. Central European Standard Time 90. Tasmania Standard Time
42. W. Central Africa Standard Time 91. Vladivostok Standard Time
43. Namibia Standard Time 92. Magadan Standard Time
44. Jordan Standard Time 93. Central Pacific Standard Time
45. GTB Standard Time 94. New Zealand Standard Time
46. Middle East Standard Time 95. UTC+12
47. Egypt Standard Time 96. Fiji Standard Time
48. Syria Standard Time 97. Kamchatka Standard Time
49. South Africa Standard Time 98. Tonga Standard Time

UTC time zone name

The short name in UTC format can be used, as long as it does not cause any ambiguity. The following table shows the equivalent conversions.

UTC time zone name Standard time zone name
UTC-12:00 or UTC-12 Dateline Standard Time
UTC-11:00 or UTC-11 UTC-11
UTC-10:00 or UTC-10 Hawaiian Standard Time
UTC-09:00 or UTC-9:00 or UTC-9 Alaskan Standard Time
UTC-08:00 or UTC-8:00 or UTC-8 Pacific Standard Time
UTC-07:00 or UTC-7:00 or UTC-7 Mountain Standard Time
UTC-06:00 or UTC-6:00 or UTC-6 Central Standard Time
UTC-05:00 or UTC-5:00 or UTC-5 Eastern Standard Time
UTC-04:00 or UTC-4:00 or UTC-4 Atlantic Standard Time
UTC-03:00 or UTC-3:00 or UTC-3 Greenland Standard Time
UTC-02:00 or UTC-2:00 or UTC-2 UTC-02
UTC-01:00 or UTC-1:00 or UTC-1 Azores Standard Time
UTC GMT Standard Time
UTC+01:00 or UTC+1:00 or UTC+1 W. Europe Standard Time
UTC+02:00 or UTC+2:00 or UTC+2 E. Europe Standard Time
UTC+03:00 or UTC+3:00 or UTC+3 Russian Standard Time
UTC+04:00 or UTC+4:00 or UTC+4 Arabian Standard Time
UTC+04:30 or UTC+4:30 Afghanistan Standard Time
UTC+05:00 or UTC+5:00 or UTC+5 West Asia Standard Time
UTC+05:30 or UTC+5:30 India Standard Time
UTC+06:00 or UTC+6:00 or UTC+6 Central Asia Standard Time
UTC+07:00 or UTC+7:00 or UTC+7 SE Asia Standard Time
UTC+08:00 or UTC+8:00 or UTC+8 China Standard Time
UTC+09:00 or UTC+9:00 or UTC+9 Tokyo Standard Time
UTC+10:00 or UTC+10 West Pacific Standard Time
UTC+11:00 or UTC+11 Central Pacific Standard Time
UTC+12:00 or UTC+12 UTC+12
UTC+13:00 or UTC+13 Tonga Standard Time

Last modified: Wednesday May 15, 2024

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