General Time Zone Facts
US Time Zones
World Time Zones (1)
100

How many time zones are there in the world?

24

100

If it is 7pm in Bangor, Maine, what time is it in Columbia, South Carolina?

7pm

100

If it is 12pm in Perth, Australia, what time is it in Sydney, Australia? 

2pm

200

How many time zones are there in the continental US?

4

200

If it is 8am in Denver, Colorado, what time is it in Dallas, Texas?

9am

200

If it is 2am in Los Angeles, California, what time is it in Nuuk, Greenland?

7am

300

How many time zones are there in the entire US (all 50 states)? 

6

300

If it is 6pm in Memphis, Tennessee, what time is it in Knoxville, Tennessee? 

7pm

300

If it is 9am in Madagascar, what time is it in Peru?

1am

400

What year was International Standard Time System established?

1884

400

If it is 4am in Montpelier, Vermont, what time is it in Salt Lake City, Utah?

2am

400

If it is 7pm on 12/10 in Dublin, Ireland, what time and date is it Anadyr, Russia?

7am on 12/11

500

Explain the relationship between the number of time zones and rotation of the Earth. 

The rotation of the earth causes the days, and one rotation takes 24 hours, which is why we have 24 time zones on Earth. 

500

If it is 11am in San Francisco, California, what time is it in Albany, New York?

2pm

500

If it is 4pm in Fairbanks, Alaska, what is it in Darwin, Australia?

10:30am