Speaking of clocks...

China has only one time zone.

Prior to 1995, the International Date Line split the country of Kiribati. The result was that the eastern part of Kiribati was a whole day and two hours behind the western part of the country where its capital is located.

In 1995 Kiribati decided to move the International Date Line far to the east- which placed the entire country into the same day.

The state of Arizona does not observe Daylight Saving Time. The Navajo Reservation within Arizona does change to Daylight time. But, the Hopi Reservation within the Navajo Reservation does not observe Daylight Saving Time.