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CallShark

Free tool

Time zone converter for meetings

Pick a time in one zone and see it everywhere your attendees are — with working hours, day changes, and daylight saving handled for you.

Runs in your browser. The times and places you enter are not sent anywhere.

Attendee time zones

Loading your local date and time…

Search any time zone by city or region — for example Lima, Casablanca, or Pacific/Fiji.

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How to use it

  1. 01

    Set the meeting time

    Choose the date, the time, and the time zone the meeting is being planned in. It starts in your own zone.

  2. 02

    Add each attendee's zone

    Search any city or region and add up to eight. Each row shows the local time, the UTC offset on that date, and whether it falls on a different day.

  3. 03

    Pick a time that works

    The colour bars show every hour of the day for each attendee. Times inside working hours for everyone are listed underneath — select one to use it.

What this handles that mental arithmetic does not

Daylight saving on different dates

The United States, Europe, and the southern hemisphere change their clocks on different weekends. Offsets here are calculated for the date you choose, not today.

Half-hour and 45-minute offsets

India, Newfoundland, parts of Australia, and Nepal are not whole hours from UTC. They are converted exactly.

Times that do not exist

When clocks go forward, one hour is skipped. If you pick a time inside it, the converter tells you rather than silently shifting it.

Meetings that cross midnight

A late-afternoon call in California is the next morning in Asia. Rows on a different date are marked, so nobody turns up a day early.

FAQ

Time zone converter questions

Yes. Offsets come from your browser's time zone data and are worked out for the specific date you pick, so a meeting in the few weeks when the US and Europe are out of step shows the correct gap.

Abbreviations are ambiguous — CST means different things in the US, China, and Cuba — and they do not say whether daylight saving applies. A named city with its offset on the meeting date is unambiguous.

The converter treats 9 a.m. to 6 p.m. local time as working hours, and 7–9 a.m. and 6–9 p.m. as early or late. Working patterns vary by country and by person, so treat it as a starting point rather than a rule.

No. The conversion happens entirely in your browser. Nothing you enter leaves the page.

Which tool should we build next?

Describe a calculator, planner, or generator that would save you time. Suggestions go straight to the team.

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