The timezone JST in JapanTimezones are always computed by their difference to UTC, the "Universal Time Coordinated". In Japan there is only a single tonezone at UTC+. For example, New York is currently at UTC-4 in Eastern Time, so the time difference between New York and Japan is 4 hours.
Japan has no time difference between summer and winter. A daylight saving time doesn't exist.
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Current time in all regions of Japan:
Only 1 nationwide time zone
|Standard time:||UTC +9||Japan Standard Time (JST)|
|Daylight saving time:||UTC +10||discontinued 1951|
Japan has an east-west extension of 21.4 degrees of longitude. Given the country's location in East Asia, this corresponds to about 2000 kilometers. At this extension, the sun's course is noticeable at different positions in the country, but it still turns out to be moderate. The position of the sun in the west of the country differs from that in the east by about 86 minutes. This means the sun rises and sets 86 minutes later in the west than in the east.
No more daylight saving time in JapanDue to the sun's orbit around the equator, the days are longer in summer (June to September in the northern hemisphere). Countries that switch to daylight saving time in the summer months align the daylight phase with the human rhythm. Unused bright morning hours are thus shifted into the evening (more information on daylight saving time here).
Due to its distance from the equator, the impact would be significant in Japan. Tokyo is located 4,000 km from the equator. A day in midsummer would then not last from 04:24 to 19:01, but from 05:24 to 20:01. Nevertheless, in 1951 it was decided to finally abandon daylight saving time in Japan.