UTC to local time
The conversion every log file needs, with the offset that applied on that date.
2026-01-15 23:30 · UTC → America/New_York
Thu, 2026-01-15, 23:30 in UTC is Thu, 2026-01-15, 18:30 in America/New_York.
2026-01-15T23:30:00.000Z
From
UTC
Thu, 2026-01-15, 23:30
UTC+00:00 · UTC
To
America/New_York
Thu, 2026-01-15, 18:30
UTC−05:00 · EST
What to watch for
Worth checking
These zones are further apart today than on that date
On the requested date the gap is −05:00 hours, but right now it is −04:00. The two zones start and end daylight saving on different dates, so the difference between them is not a constant.
Fix: Never cache an offset between two zones. Recompute it for the specific date.
Note
UTC does not observe daylight saving
UTC keeps the same offset all year, so its clocks never change. If the other zone does observe it, the gap between them shifts twice a year even though nothing changes on this side.
Upcoming clock changes
UTC
No clock changes — this zone keeps one offset all year.
America/New_York
2026-03-08T07:00:00.000Z
Clocks jump forward an hour: 01:59 is followed by 03:00, and the times in between never happen.
UTC−05:00 → UTC−04:00 (EST → EDT)
2026-11-01T06:00:14.062Z
Clocks fall back an hour: the wall clock returns to 01:00, so that hour happens twice.
UTC−04:00 → UTC−05:00 (EDT → EST)
Convert your own time
Use the form on the home page, or call the API or MCP server. This page is also available as markdown.