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Convert Greenwich Mean Time to Mountain Time

GMT · UTC+1 → MST · UTC−6

GMT is 7 hours ahead of MST

London · BST

Tuesday, 8 September 2026

Denver · MDT

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
LondonBST · +01:00
0003060912151821
DenverMDT · -06:00
1720230205081114

Shared working hours: 16:00–18:00 in London is 09:00–11:00 in Denver.

Working (09–18) Awake, off the clock Asleep (23–07)

Pick a time and share it

08:05 Tue 8 Sep London = 01:05 Tue 8 Sep Denver

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Hour-by-hour conversion

London (GMT)Denver (MST)
00:0017:00prev. day
01:0018:00prev. day
02:0019:00prev. day
03:0020:00prev. day
04:0021:00prev. day
05:0022:00prev. day
06:0023:00prev. day
07:0000:00
08:0001:00Now
09:0002:00
10:0003:00
11:0004:00
12:0005:00
13:0006:00
14:0007:00
15:0008:00
16:0009:00Both at work
17:0010:00Both at work
18:0011:00
19:0012:00
20:0013:00
21:0014:00
22:0015:00
23:0016:00

About this conversion

GMT here means Greenwich Mean Time, represented by London (Europe/London), currently UTC+1. MST means Mountain Time, represented by Denver (America/Denver), currently UTC−6.

GMT is used by 22 zones, including United Kingdom. If you meant a different one, see every meaning of GMT.

MST is used by 4 zones, including United States. See every meaning of MST.

Working hours are shown as 09:00–18:00 local, and sleeping hours as 23:00–07:00. The hour table is anchored on the current day in London; day boundaries are marked where the date differs.

Quick answers

  • 09:00 GMT is 02:00 MST
  • 12:00 GMT is 05:00 MST
  • 15:00 GMT is 08:00 MST
  • 18:00 GMT is 11:00 MST

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