DateUtils

Time Zone Tools

Time zone tools answer "what time is it there?" and "what time will it be there when it is this time here?". They use the IANA time zone database as implemented by your browser, so daylight saving rules, half-hour offsets and 45-minute offsets are handled from real data rather than by adding a fixed number of hours.

Dates can change when you cross zones, and two places can be an hour closer or further apart for a few weeks a year when they change their clocks on different dates. Both tools show the resulting date and offsets so those cases are visible.

Tools in this category

Time Zone Converter Convert a date and time from one time zone to another. World Clock Follow the current time in cities around the world.

Which tool do you need?

  • What is 15:00 in London when it is that time in New York, Tokyo or Sydney? The Time Zone Converter converts a specific date and time. Open the tool.
  • What time is it in several cities right now? The World Clock keeps a list of places you choose, on your device only. Open the tool.

Good to know

Time zone rules change. Governments alter offsets and daylight saving dates, sometimes at short notice. Results depend on the time zone data in your browser, which updates with the browser and operating system.