Method
How the time zone converter works
The converter interprets the entered wall-clock time in the source zone, finds the matching UTC instant, then formats that instant in the destination zone. Offset rules depend on the selected date.
Example
Time zone converter example
10:00 in India converts to a different New York time in January than in July because New York observes daylight saving time and India does not.
FAQ
Time zone converter FAQ
Does the converter handle daylight saving time?
Yes. It uses the selected date and named time-zone rules rather than assuming one permanent abbreviation offset.
Why avoid abbreviations such as CST?
CST can refer to more than one region. A named location such as America/Chicago is less ambiguous.
Are historical changes included?
The browser supplies its installed time-zone database. Very old or newly changed government rules may vary by browser version.