Converted times
| City | Local time | Date | Difference | UTC offset |
|---|
How the conversion works
The converter interprets your chosen wall-clock time in the starting city's IANA time zone, converts it to Coordinated Universal Time (UTC) — the world's reference clock — then renders that single universal moment in each destination zone. Because it uses the time zone database built into your browser, daylight saving transitions and historical rule changes are handled automatically. Every conversion is really just two steps: local → UTC → local.
Worked example
Say a webinar is announced for 2:00 PM in New York on a June Tuesday. New York in June is on Eastern Daylight Time, UTC−4, so 2:00 PM there is 18:00 UTC. London in June is UTC+1 (British Summer Time): 18:00 UTC becomes 7:00 PM in London. Tokyo never observes DST and sits at UTC+9: 18:00 UTC becomes 3:00 AM Wednesday in Tokyo — note the day change. That last detail is the one that burns people: always check the date column, not just the time, when a meeting crosses the Pacific.
The traps worth knowing
DST windows: because countries switch to summer time on different dates, the offset between two cities can temporarily shift — New York and London are 5 hours apart most of the year but 4 hours apart for about two weeks each spring. A recurring weekly call "at 3 PM New York time" silently moves for Londoners during that window. Half-hour zones: India (UTC+5:30), Iran, parts of Australia and Canada, and Nepal (UTC+5:45) don't sit on whole hours — never guess, convert. "Noon" ambiguity: when someone says 12 PM, confirm it's noon, not midnight; and for anything international, share the time in UTC or as a converter link to remove all doubt.
Frequently asked questions
Why did the offset change from what I remembered?
Daylight saving. A city's UTC offset moves by an hour twice a year if it observes DST — the converter always applies the rule in force on the specific date you chose, which is why picking the right date matters as much as the right time.
Can I convert a time in the past or future?
Yes — pick any date. The browser's time zone database includes historical and scheduled rule changes, so a conversion for last December or next July uses the offsets actually in force then.
What's the difference between GMT and UTC?
For everyday purposes, none — they describe the same reference time. UTC is the precise modern standard kept by atomic clocks; GMT is the older name that lives on in British usage and in zone labels like "GMT+8."
Comparing many cities at once for a meeting? The meeting planner shows working hours side by side. For the story behind the zones themselves, read time zones explained and daylight saving time.