What is the difference between BTT and IST?
BTT is 30 minutes ahead of IST, with both being used in South Asia. India follows IST, while Bhutan uses BTT.
UTC time
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BTT
Bhutan Time
4 Dec 2025
Frequently Asked Questions
Does this area observe DST?
No, Bhutan does not observe daylight saving time and remains on standard hours throughout the year.
Which major cities follow this pattern?
Thimphu, the capital, and all other cities in Bhutan follow this schedule.
What areas share the same hours?
The country shares this schedule with some regions of India, though most of India follows IST.
How does this compare with UTC?
BTT is 6 hours ahead of UTC.
Why doesn't this area observe DST?
Bhutan stopped observing daylight saving time after its introduction in the 1970s, opting for a consistent schedule.
How did this system get established?
BTT was established after Bhutan's modernization in the 1960s, aligning with its geographic location in South Asia.
What are the typical work hours here?
Business hours typically run from 9:00 AM to 5:00 PM, with a break for lunch.
What is the economic importance of this area?
Bhutan’s economy is largely based on agriculture, hydropower, and tourism, with a growing emphasis on sustainable development.