Use named zones
Choose places such as London or New York instead of fixed UTC offsets so daylight saving rules stay attached to the conversion.
DateTimeHub Tool
Time Zone Converter
Convert a selected date and time across cities or IANA time zones, with local dates shown beside every result.
Time Conversion
Tip: Click the gear on the first tile to change the source timezone and date/time. Use "Now" to set the current time, and click the time to toggle 12/24-hour format. Use the + tile to add target timezones.
Useful ways to use this tool
Convert the real date
Offsets can change during the year, so set the actual calendar date for flights, meetings, launches and deadlines.
Compare multiple targets
Add more destination rows when you need to coordinate with several cities at once.
Frequently asked questions
Why should I select a city instead of GMT plus or minus hours?
Cities map to named time zones with daylight saving rules, while fixed offsets can be wrong for part of the year.
Can the converted date be different from the source date?
Yes. The tool shows the local date for each target so overnight conversions are visible.