About Timezone Converter

Convert a date-time between multiple timezones. Part of the DevTools Surf developer suite. Browse more tools in the Date / Time collection.

Use Cases

• Scheduling meetings across distributed international teams
• Converting server UTC timestamps to local time for debugging
• Planning deployment windows across multiple geographic regions
• Calculating deadline times for global content publication

Tips

• Convert meeting times across multiple timezones at once
• Use UTC as the reference point for server-side timestamps
• Account for daylight saving time shifts in your conversions

Fun Facts

• Time zones were first proposed by Sir Sandford Fleming in 1879 after missing a train in Ireland due to a printed schedule error.
• There are currently 38 distinct UTC offsets in use worldwide, including unusual ones like UTC+5:45 (Nepal) and UTC+8:45 (Eucla, Australia).
• China spans five geographical time zones but uses a single official time (UTC+8), meaning sunrise in western China can occur as late as 10 AM.

FAQ

How many zones?

All IANA timezones (~600). Major cities are indexed by common name (New York, London, Tokyo) and by UTC offset (UTC+5, UTC-7).

DST handled?

Yes — the tool uses zone rules, not fixed offsets. London is UTC+0 in winter, UTC+1 in summer; the tool applies the right offset per date.

Multi-zone comparison?

Yes — convert one time to many zones simultaneously. Useful for scheduling across distributed teams.

Why am I one hour off?

Almost always DST. Both source and destination can have DST at different start/end dates. The tool's output is authoritative — your system time might be wrong.