DST Reference

Educational note on one-hour clock shifts (not a timezone database).

Show US DST shift?

Tab to move between fields

Illustrative shift (h)

NoteUS DST: spring forward 1h (March), fall back 1h (November) — verify local law.

How to Use This Calculator

Select whether to display the standard US daylight saving time shift.
Review the illustrative clock shift and the informational note.
This is a reference tool only -- check your local government for current DST rules, as they vary by region and may change.

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