Time Zone Converter & Meeting Planner

Popular comparisons

Upcoming clock changes

When one place changes its clocks and the other doesn't, the gap between them shifts by an hour — the most common reason a recurring meeting suddenly lands at the wrong time. These are the next daylight-saving changes among the cities on this site.

How the converter works

Which time does the slider set?

The time in the first row, the "home" place, on the date shown. Use the ★ button on any row to make it home; the rest of the list is recalculated for the same moment.

Is daylight saving time handled?

Yes. Offsets come from your browser's copy of the IANA time zone database and are worked out for the exact date and hour you pick, so a meeting set after a clock change shows the new offset. If a place changes its clocks within two weeks of the chosen date, a warning appears under the grid.

What is the difference between "EST" and "New York"?

An abbreviation row is pinned to its fixed offset: EST is always UTC−05:00. A city or IANA zone row follows the local clock, so New York shows EDT (UTC−04:00) in summer. For real meetings, add the city.

How are the best meeting times chosen?

Each hour of the home day is scored by how many places are inside 09:00–17:00 on a weekday there. Hours where everyone is at work are listed first; if there are none, the hours with the most people at work and nobody asleep are shown instead.

Is my list saved?

Your list is stored in this browser only. "Copy link" puts the places, date and time in the URL so anyone opening it sees the same comparison — no account needed.