The timezone ICT in Thailand

Only 1 nationwide time zone

Standard time:	UTC +7	Indochina Time (ICT)
Daylight saving time:	-	none

Thailand has an east-west extension of 7.3 degrees of longitude. Given the country's location in Southeast Asia, this corresponds to about 790 kilometers. With this still relatively small extension, the course of the sun is only slightly different at various positions in the country. The position of the sun in the west of the country differs from that in the east by only about 29 minutes. This means the sun rises and sets 29 minutes later in the west than in the east.


The Indochina Time also applies in Vietnam, Cambodia and in Laos.

No daylight saving time in Thailand

Due 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 proximity to the equator, the impact in Thailand would not be particularly large. Bangkok is located just 1,550 km from the equator. A day in midsummer would then not last from 05:50 to 18:49, but from 06:50 to 19:49. The effect would be quite noticeable in the evening, but the sun rising later in the morning falls at a time when many people are already awake. Thus, daylight saving time was never introduced in Thailand.