Time Zone Converter and Meeting Planner

UTC offsets of common time zones in 2026

When the clocks change in 2026

When it is 9:00 AM in New York

How to convert a time between time zones

1. Find both UTC offsets for the date. Look up each zone’s offset on that date, not today: New York is UTC−5 in winter and UTC−4 in summer.
2. Take the difference. Subtract the offsets: Kolkata (+5:30) minus New York (−4) is 9 hours 30 minutes, so Kolkata is 9:30 ahead in summer.
3. Add it to the time. Add the difference to the time you have, and carry past midnight into the next day: 3:00 PM in New York is 12:30 AM the next day in Kolkata.
4. Check for a clock change. If either zone changes its clocks that day, the time you entered may not exist or may happen twice. The converter flags both.

Frequently asked questions

How do I convert a time from one time zone to another?

Enter the date and time, choose the zone it is in, and add the zones you want. The converter turns your time into one exact moment and shows that moment on each zone’s clock, with the date, the UTC offset and how far ahead or behind each zone is. By hand: find both UTC offsets for that date and add the difference.

What happens if I enter a time that does not exist because the clocks sprang forward?

On a spring-forward night the clock skips an hour: in New York on March 8, 2026 it goes from 1:59 AM straight to 3:00 AM, so 2:30 AM never happens. The converter moves such a time forward by the length of the gap, so 2:30 AM becomes 3:30 AM, and says so above the results. This is the same rule JavaScript dates and most calendar apps follow.

What about a time that happens twice when the clocks go back?

On a fall-back night one hour repeats: in New York on November 1, 2026, 1:30 AM happens first on daylight time (UTC−4) and again an hour later on standard time (UTC−5). The converter uses the first one and tells you; tick “Use the second occurrence” to switch. In the meeting planner the repeated hour appears twice, marked “(2nd)”.

Why are some time zones 30 or 45 minutes off?

Countries choose their own offsets, and a few picked half or quarter hours to match their longitude better. India is UTC+5:30 all year, Nepal UTC+5:45, Iran UTC+3:30, Newfoundland UTC−3:30 (−2:30 in summer), central Australia UTC+9:30, and New Zealand’s Chatham Islands UTC+12:45 (+13:45 in summer). Lord Howe Island even changes its clocks by only half an hour. The converter handles all of them to the minute.

How do I find a good meeting time across time zones?

Add everyone’s zones and look at the meeting planner. Each row is one zone’s clock through the day; shaded cells are within working hours there (9 AM to 5 PM by default, change them above the planner), and a highlighted column means everyone is working. The line above the planner gives the exact overlap, to the quarter hour. Click an hour to choose it. Weekends and public holidays are not taken into account.

Is UTC the same as GMT?

For scheduling, yes: both are the time at 0° longitude with no daylight saving. UTC is the precise atomic-clock standard; GMT is also the name of the UK’s winter time. London is not always on GMT, though: in summer it is on British Summer Time, UTC+1.

What does a share link contain?

The date, the time, the zone it is in, the other zones and your working hours if you changed them. Anyone who opens it sees the same moment in the same zones, with their own zone added if it is missing. Nothing else is in the link, and nothing you enter is sent anywhere.