Daylight saving time is handled for you
Offsets change during the year. New York is UTC−5 in winter and UTC−4 in summer, while Phoenix stays on UTC−7 all year and most of Asia doesn’t use daylight saving at all. This converter reads the rules built into your browser (the IANA time zone database) for the exact date you pick, so a meeting in March or November — when the U.S. and Europe switch on different weekends — comes out right.
U.S. time zones at a glance
| Zone | Standard | Daylight |
|---|---|---|
| Eastern | UTC−5 (EST) | UTC−4 (EDT) |
| Central | UTC−6 (CST) | UTC−5 (CDT) |
| Mountain | UTC−7 (MST) | UTC−6 (MDT) |
| Pacific | UTC−8 (PST) | UTC−7 (PDT) |
| Alaska | UTC−9 | UTC−8 |
| Hawaii | UTC−10 | no DST |
U.S. daylight saving time starts on the second Sunday in March and ends on the first Sunday in November.
Frequently asked questions
What time is 3 PM ET in PT?
12 PM. Pacific time is three hours behind Eastern time all year.
Why is the difference to London sometimes 4 hours instead of 5?
The U.S. and the U.K. change their clocks on different dates, so for a few weeks in March and late October/early November the gap shrinks by an hour.
Sources
Last reviewed 2026-10-14.