BTT to GMT Time Converter

Convert Bhutan Time (BTT) to Greenwich Mean Time (GMT). Both time zones are shown live below; current offset between them is 5 hours behind.

Thimphu · Bhutan Time
16:59:04
Wednesday, May 13, 2026
GMT+6 · UTC+06:00
London · Greenwich Mean Time
11:59:04
Wednesday, May 13, 2026
GMT+1 · UTC+01:00

Convert a specific time

From: BTT (Thimphu)
To: GMT (London)
--:--

Daylight Saving status right now

BTT (Bhutan Time)
Observes DST
No
GMT (Greenwich Mean Time)
Observes DST
Yes
In DST right now
Yes
Next fall back
2026-10-25
Offset shift
UTC+01:00 → UTC+00:00

Heads up: GMT observes DST while BTT does not. The 5-hour difference shown above will shift by one hour when GMT starts or ends DST.

When can BTT and GMT meet?

00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
BTT
GMT
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Thimphu (BTT). Each row shows the local working-hours state in that zone for the same moment in time.
3 hours of overlap during standard 9am-5pm working hours.
Best meeting window: 14:00–16:00 BTT (09:00–11:00 GMT).

Hour-by-hour BTT to GMT conversion table

BTT time (Thimphu)GMT time (London)Status
00:00 Wed19:00 TueOff-hours both sides
01:00 Wed20:00 TueOff-hours both sides
02:00 Wed21:00 TueOff-hours both sides
03:00 Wed22:00 TueOff-hours both sides
04:00 Wed23:00 TueOff-hours both sides
05:00 Wed00:00 WedOff-hours both sides
06:00 Wed01:00 WedOff-hours both sides
07:00 Wed02:00 WedOff-hours both sides
08:00 Wed03:00 WedOff-hours both sides
09:00 Wed04:00 WedBTT working
10:00 Wed05:00 WedBTT working
11:00 Wed06:00 WedBTT working
12:00 Wed07:00 WedBTT working
13:00 Wed08:00 WedBTT working
14:00 Wed09:00 WedBoth at work
15:00 Wed10:00 WedBoth at work
16:00 Wed11:00 WedBoth at work
17:00 Wed12:00 WedGMT working
18:00 Wed13:00 WedGMT working
19:00 Wed14:00 WedGMT working
20:00 Wed15:00 WedGMT working
21:00 Wed16:00 WedGMT working
22:00 Wed17:00 WedOff-hours both sides
23:00 Wed18:00 WedOff-hours both sides

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

Bhutan Time (BTT)
IANA identifier
Asia/Thimphu
Current UTC offset
UTC+06:00
Current abbreviation
GMT+6
Major cities in this zone
Thimphu
Greenwich Mean Time (GMT)
IANA identifier
Europe/London
Current UTC offset
UTC+01:00
Current abbreviation
GMT+1
Major cities in this zone
LondonManchesterEdinburghBirmingham

Sun today in Thimphu and London

London
Sunrise
05:13
Sunset
20:43
Solar noon
12:58
Daylight
15h 29m

Related converters

GMT to BTT (reverse)BTT to ESTBTT to PSTBTT to UTCBTT to CETBTT to ISTEST to GMTPST to GMTUTC to GMTCET to GMTIST to GMT
Looking for local time? See time in Thimphu or time in London.

Frequently asked questions

What is the time difference between BTT and GMT right now?+
GMT (Greenwich Mean Time) is currently 5 hours behind BTT (Bhutan Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does BTT or GMT observe daylight saving time?+
BTT: does not observe daylight saving time. GMT: observes daylight saving time.
When is the best time to schedule a meeting between BTT and GMT?+
The strongest overlap is 14:00–16:00 BTT (09:00–11:00 GMT), giving 3 hours when both sides are within standard 9am-5pm working hours.
What time is it in London when it is 12:00 noon in Thimphu?+
When it is 12:00 Wed in Thimphu (BTT), it is 07:00 Wed in London (GMT).
Which IANA time zone identifiers are used for BTT and GMT?+
BTT maps to "Asia/Thimphu" in the IANA database. GMT maps to "Europe/London". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Thimphu ahead of or behind London?+
Whether Thimphu (BTT) is ahead of or behind London (GMT) depends on the current UTC offsets. Right now GMT is 5 hours behind BTT. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for BTT and GMT?+
BTT is UTC+06:00 (GMT+6) and GMT is UTC+01:00 (GMT+1). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both BTT and GMT?+
Yes. There are 3 hours of overlap during standard 9am-5pm working hours, with the strongest window at 14:00–16:00 BTT.