Set a time in one place and see it everywhere else.
How to use it
Pick a date and time and the time zone it belongs to (your own zone is preselected). The table shows the same moment in every zone in your list, with the UTC offset, a day marker when the date changes, and whether it falls in typical working hours (9:00–17:00). Add or remove zones; your list is remembered in this browser.
Conversions use the IANA time zone database built into your browser, so daylight-saving rules are applied for the exact date you choose. If you pick a time skipped when clocks go forward, the page warns you and shows the nearest valid time.
Frequently asked questions
Does it handle daylight saving time?
Yes. The offset is calculated for the exact date, so a meeting in March or October shows the correct local times on both sides.
What is the difference between UTC and GMT?
For everyday use they show the same time. UTC is the scientific standard; GMT is also the name of the UK’s winter time zone.
Why is my city not listed?
Zones are named after one major city each, for example Europe/Warsaw or America/New_York. Pick the city in your zone.