World Time Zone Map Time zone abbreviations GMT+01
GMT+01 is a time offset that adds 1 hour to Greenwich Mean Time (GMT).
It is observed in the CET, WAT during standard time, and in the BST, IST, WEST during the other months (Daylight saving time).
Some locations use it year-round.
| Abbreviation | Name |
|---|---|
| BST | British Summer Time |
| CET | Central European Time |
| IST | Irish Standard Time |
| WAT | West Africa Time |
| WEST | Western European Summer Time |
| Africa/Algiers | Africa/Bangui |
| Africa/Brazzaville | Africa/Douala |
| Africa/Kinshasa | Africa/Lagos |
| Africa/Libreville | Africa/Luanda |
| Africa/Malabo | Africa/Ndjamena |
| Africa/Niamey | Africa/Porto-Novo |
| Africa/Tunis | Atlantic/Canary |
| Atlantic/Faroe | Atlantic/Madeira |
| Europe/Dublin | Europe/Guernsey |
| Europe/Isle_of_Man | Europe/Jersey |
| Europe/Lisbon | Europe/London |
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