How Many Time Zones Does Asia Span?

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There are about 70 individual time zones in Asia, from Iran Daylight Time (IRDT) to Armenia Summer Time (AMST) and Japan Standard Time (JST). These time zones are all based on Coordinated Universal Time (UTC), which is the international time standard.

Some Asian countries set different time zones for different times of year, while others have a single standard time. The amount of time that a certain Asian nation or region's time is offset from UTC also varies. For example, the entire nation of China runs on a single time zone even though areas of Russia that run parallel to China run on multiple different time zones.