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Compare unlimited time zones side‑by‑side, drag the Global Timeline to preview any moment across every city at once, and let the built‑in Meeting Planner find the best overlapping work hours automatically.

Global Timeline & Meeting Planner

Drag anywhere on the ruler to preview that moment in every added city. Green = comfortable work hours (9am–6pm) in each zone.

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Convert a Specific Date & Time

Pick an exact date/time in any of your added zones and instantly see it converted everywhere else.

Date

Time

Reference Zone

All calculations use your browser's built‑in time zone database (IANA/Olson) and automatically account for Daylight Saving Time. Nothing you enter is uploaded anywhere.