Dates & time
Time zone viewer
See the same UTC instant in another time zone.
A clear answer. Here’s how.
Uses the browser’s Intl time-zone database for the supplied UTC instant, including daylight-saving rules available to that browser. Starting from an explicit UTC instant avoids ambiguous or missing local times at clock changes.
See a worked example
Worked example
A fixed demonstration, separate from the values you enter above.
- UTC instant (YYYY-MM-DDTHH:mm:ssZ)
- 2026-10-16T12:00:00Z
- Display time zone
- Europe/London
Example result
- Local date and time
- Friday, 16 October 2026 at 13:00:00 BST
- Time zone
- Europe/London
- UTC instant
- 2026-10-16T12:00:00.000Z