About ChronoMap

ChronoMap is built and published by Agenciarse (Agencia RSE). All tools are free and need no account.

Live clocks read your device clock and convert it with the browser's built-in Intl API, which uses the IANA Time Zone Database. That database records each region's UTC offsets and daylight saving rules. ChronoMap has no time zone rules of its own.

If your device clock is wrong, the live clocks are wrong by the same amount. If a government changes its rules at short notice, the result depends on when your browser or system gets the update.

City and time zone pages are generated from templates and a structured data file, then published without being written one by one. Offsets and the next clock change are calculated when the site is built, so the live clock on a page is more current than its text if they ever disagree.

Best-time-to-call windows assume business hours of 9:00 to 17:00 and can shift by an hour around daylight saving changes. Population figures are rounded metro-area estimates and are for orientation only.

• Flight tools: they do the time zone maths on the times you enter. They have no live flight data, so check real schedules with your airline.
• Jet lag calculator: a rough estimate based on time zones crossed and direction of travel. It is not medical advice.
• Sunrise and sunset: calculated with an approximation of the NOAA solar formula, so expect them to differ by a few minutes from official tables.

Found a wrong time, offset or city detail? Email dev@agenciarse.com with the page address and what you expected to see.