US time zone map

Capitals by zone

How to read the map

1. Each color is one IANA zone. States share a color when their capitals share a zone.
2. Find a state in the table under the map for its zone name, its common label such as Central or Mountain, and the current local time there.
3. The times update when you reload the page and follow daylight saving rules for each zone.

Why the map uses each capital's zone

Several states span two time zones, with the line following county borders or rivers. Drawing those lines needs county-level zone data, which this map does not ship. So each state takes the zone of its capital, which is where most state business runs on the clock.

For the exact zone at a point, especially near a zone line, use the time zone finder, which looks up the zone for the coordinates you click.

Daylight saving time

Most of the country moves clocks forward on the second Sunday in March and back on the first Sunday in November. Arizona, apart from the Navajo Nation, and Hawaii stay on standard time all year. That is why Arizona has its own zone name, America/Phoenix, separate from America/Denver.

Some zone names, such as America/Boise, America/Detroit, and America/Indiana/Indianapolis, exist because those areas had different clock histories. Today they keep the same time as their main zone.