Time zones

In the United States, with all its overseas territories, there are 9 time zones. Of these nine, four are in the contiguous United States.

This is a map created by NIST showing time zones around the world. Please contact NIST at timeinfo@nist.gov about use of this image.

Practice calculating elapsed time with this time zones worksheet!

Time zone and current times for all of the United States including information about daylight savings time and utc/gmt.

How often does it happen that you set up an alarm for 7 AM so that you don’t miss an important appointment but halfway through noon you realize your alarm never went off and on checking you find it was set for 7 PM instead? It is a sad reality, but, a reality at that!

Maps, you have to love them! As a kid in the pre-internet age, I spent many an hour poring over my precious atlas, memorizing countries, their capital cities, rivers, mountain ranges, flags...Dreaming of visiting them all, from Afghanistan to Zimbabwe.

map of time zones in north america | Truck drivers are on a first name basis with all of the cities in the ...

Explore U.S. time zones and abbreviations. Learn the differences between ET, EST, and other zones, plus time offsets from GMT to Alaska Time.