Usa how many time zones

For each climate division, monthly station temperature and precipitation values are computed from the daily observations. The divisional values are weighted by area to compute state wide values and the state wide values are weighted by area to compute regional values.

The U. USA climate varies dramatically by region. The area could be split even further into three types of climate : coastal Mediterranean climates, Desert climates and Mountainous alpine climates. In all three of these areas, summers are hot and dry. The six major climate regions are polar, temperate, arid, tropical, Mediterranean and tundra. Some people prefer to have all four seasons — fall, winter, spring and summer — and all of the weather that comes with each. The contiguous US has 4 standard time zones.

In addition, Alaska , Hawaii , and 5 US dependencies all have their own time zones. Since Howland Island and Baker Island constitute the world's westernmost landmasses in relation to the International Date Line , making them the last places on Earth where any date exists, they are sometimes assigned a theoretical 12th time zone called Anywhere on Earth AoE. The time zones in the contiguous US are often referred to by their generic name, without making a difference between standard time and Daylight Saving Time designations.

In practice, this means that the local time in these time zones changes when DST begins and ends. Note: Local time in these time zones changes when Daylight Saving Time begins and ends. The Alaska Time Zone encompasses almost the entire state of Alaska. The clock time in the Alaska Time Zone is based on the mean solar time at degrees west of Greenwich Observatory.

Places within this time zone are 5 hours behind UTC. A map showing the time zones used in the 50 states. Sophy Owuor April 2 in World Facts. Olympic Games History. Southeast Asian Countries.