Time zone converter

Choose source zone, target zone, date, and time. The result includes both 12-hour and 24-hour clock readings and the UTC offset at that instant.

Why IANA names

Labels like EST are ambiguous. Asia/Kolkata and America/New_York are not. The converter lists Intl.supportedValuesOf("timeZone") when the engine provides it.

Questions

Are offsets hardcoded?

No. Conversion uses the browser IANA database, including DST.

What about the spring-forward gap?

A local time that does not exist is resolved by the same Intl offset iteration used for valid times. Prefer times that exist on that date.

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