Are all time zones on the hour?

Related questions

1. Why do we kiss at midnight on New Year's Eve?
2. What is current est time in USA?
3. Does Michigan have 2 time zones?
4. Why are there time zones?
5. Why is there 60 seconds in a minute?
6. Which country has no night only day?
7. How do you determine time zones?
8. Which country has the latest time zone?
9. Which country has the shortest night time?
10. Does Alaska have two time zones?

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