Calculators
Time Zone Planner
Line up one meeting time across several cities at once.
Runs entirely in your browser — nothing is uploaded
Cities
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Frequently asked questions
Does it handle daylight saving time?
Yes. Each city uses its own DST rules for the date you pick, which is exactly where manual time zone maths usually goes wrong.
How many cities can I compare?
Add as many as you need and the times are shown side by side for the chosen moment.