While accessing our web site you may find some time zones that you many not recognise (such as GDT, GMT and suchlike). For that reason and to avoid a deluge of questions about 'What is GDT' we've produced the following list to provide a list of time zones that you may see from time-to-time.

Offset from GMT Standard Time Label Daylight Saving Time Label Long Name 0:00 GMT GDT Greenwich Mean Time 1:00 ZW1 YW1 1 hour west of GMT 2:00 ZW1 YW2 2 hours west of GMT 3:00 ZW3 YW3 3 hours west of GMT 3:30 NST NDT Newfoundland 4:00 AST ADT Atlantic Standard Time 5:00 EST EDT Eastern Standard Time 6:00 CST CDT Central Standard Time 7:00 MST MDT Mountain Standard Time 8:00 PST PDT Pacific Standard Time 9:00 YST YDT Alaska Standard Time 9:30 ZW9B ZW9B 9 1/2 hours west of GMT 10:00 HST HDT Hawaii-Aleutian Standard Time 11:00 BST BDT Bering Standard Time 12:00 ZW12 ZW12 12 hours west of GMT -12:45 ZE12C ZE12C 12 3/4 hours east of GMT -12:00 ZE12 ZE12 12 hours east of GMT -11:30 ZE11B ZE11B 11 1/2 hours east of GMT -11:00 ZE11 ZE11 11 hours east of GMT -10:30 ZE10B ZE10B 10 1/2 hours east of GMT -10:00 ZE10 ZE10 10 hours east of GMT -9:30 ZE9B ZE9B 9 1/2 hours east of GMT -9:00 ZE9 ZE9 9 hours east of GMT -8:00 ZE8 ZE8 8 hours east of GMT -7:00 ZE7 ZE7 7 hours east of GMT -6:30 ZE6B ZE6B 6 1/2 hours east of GMT -6:00 ZE6 ZE6 6 hours east of GMT -5:45 ZE5C ZE5C 5 3/4 hours east of GMT -5:30 ZE5B ZE5B 5 1/2 hours east of GMT -5:00 ZE5 ZE5 5 hours east of GMT -4:30 ZE4B ZE4B 4 1/2 hours east of GMT -4:00 ZE4 ZE4 4 hours east of GMT -3:30 ZE3B ZE3B 3 1/2 hours east of GMT -3:00 ZE3 ZE3 3 hours east of GMT -2:00 ZE2 ZE2 2 hours east of GMT -1:00 CET CEDT Central European Time