Which time zone format should I use?

Use IANA time zone names such as Asia/Shanghai or America/New_York.

How is a time without zone interpreted?

The input is interpreted in the source zone, then converted to the target zone and ISO time.

EffiRoom

Time Zone Converter

Convert date time between IANA time zones

Runs locally in your browser; input is never uploaded

Calculators & Converters

Time Zone Converter

Date time

From zone

To zone

Usage

Type, paste or choose a local date and time, then search for the source and target time zones. Run to copy the source-zone time, target-zone time and ISO value separately. The date-time value has no zone of its own and is interpreted in the selected source zone.

FAQ

1.
Which time zone format should I use?
Use IANA time zone names such as Asia/Shanghai or America/New_York.
2.
How is a time without zone interpreted?
The input is interpreted in the source zone, then converted to the target zone and ISO time.