Built for a connected world
The live map shows major world cities, the current daylight boundary, and dates that make yesterday and tomorrow unmistakable. Search opens the rest of the world without covering the map in clutter.
Compare and convert
Compare keeps up to ten places together for teams, families, travellers, and anyone coordinating across borders. TimeTravel converts a chosen local date and time to another location, including historical and future daylight-saving rules available to the browser.
How time calculations work
City pages include the time and time-zone details in their initial server response. Live updates then use your device clock and the time-zone rules in your browser, so keep your device time synchronized. TimePassport identifies time zones with standard IANA names and applies the rules for the selected date instead of adding a fixed number of hours. The city, map, icon, and software sources are documented on the Data & licenses page.
Accuracy and responsible use
Governments occasionally change time-zone rules with limited notice, and browsers may receive those updates at different times. TimePassport is designed for everyday planning, but important legal, medical, financial, and transportation deadlines should also be confirmed with the responsible organization.
Clock changes and worked examples
City guides explain local scheduling pitfalls and link to government time services or the IANA database. Upcoming clock changes and January/July examples are calculated when you open a city page, using the server's available time-zone rules. The comparison examples show the same 09:00 origin appointment on two explicit dates; they are not a fixed difference for the whole year. Refresh a page to recalculate its planning information.
TimeTravel checks whether an entered local minute exists. It rejects a skipped time during a forward clock change and offers both occurrences of a repeated time during a backward change. Dates and UTC offsets stay visible so you can distinguish those occurrences. The ±50-year range is a planning limit, not a guarantee that governments will leave future rules unchanged.
Simple by design
No TimePassport account is required. The first view is useful immediately. Remembering settings between visits is optional: you can enable it or clear saved settings on the Privacy page. Saved preferences stay on your device.
Contact
For help or feedback, email support@timepassport.net. For privacy questions or requests, email privacy@timepassport.net.