Greenwich Mean Time
GMT means UTC throughout the year.
TIME ZONE CONVERTER
GMT to MST
Time Converter
Convert Greenwich Mean Time to Mountain Standard Time. Compare dates, seasonal differences and meeting hours.
GMT is 7h ahead of MST in 2026.
9 AM GMT = 2 AM MST
Selected date: November 3, 2026. Fixed abbreviations retain their stated UTC offsets.
THE QUICK REFERENCE
CSVGMT to MST conversion table
November 3, 2026 · Date changes are marked.
View the full 24-hour table
| GMT | MST |
|---|---|
| 12:00 AM | 5:00 PM -1 day |
| 1:00 AM | 6:00 PM -1 day |
| 2:00 AM | 7:00 PM -1 day |
| 3:00 AM | 8:00 PM -1 day |
| 4:00 AM | 9:00 PM -1 day |
| 5:00 AM | 10:00 PM -1 day |
| 6:00 AM | 11:00 PM -1 day |
| 7:00 AM | 12:00 AM |
| 8:00 AM | 1:00 AM |
| 9:00 AM | 2:00 AM |
| 10:00 AM | 3:00 AM |
| 11:00 AM | 4:00 AM |
| GMT | MST |
|---|---|
| 12:00 PM | 5:00 AM |
| 1:00 PM | 6:00 AM |
| 2:00 PM | 7:00 AM |
| 3:00 PM | 8:00 AM |
| 4:00 PM | 9:00 AM |
| 5:00 PM | 10:00 AM |
| 6:00 PM | 11:00 AM |
| 7:00 PM | 12:00 PM |
| 8:00 PM | 1:00 PM |
| 9:00 PM | 2:00 PM |
| 10:00 PM | 3:00 PM |
| 11:00 PM | 4:00 PM |
Starting with the MST working day
These examples start on 2026-11-03 in MST.
09:00 MST16:00 →GMT · 2026-11-03
17:00 MST00:00 →GMT · 2026-11-04
Which time-zone meaning are we using?
Mountain Standard Time
MST means UTC−07:00 throughout the year. Mountain Time follows regional clock rules and uses UTC−07:00 on your selected date.
Use MT for local civil time →ONE CLOCK TIME. THE WHOLE YEAR.
Year CSV09:00 GMT to MST throughout 2026
09:00 in GMT converts to 02:00 in MST on every date in 2026. The destination has the same calendar date.
Every calendar date is included, not just workdays. Date ranges include both endpoints. Based on IANA 2026e; future rules may change.
DON’T LOSE A DAY
When does GMT time become a different date in MST?
Your complete source day: 2026-11-03. Each range shows which destination date to use.
GMT · 2026-11-0300:00–07:00UTC
MST · 2026-11-0217:00–24:00UTC−07:00 Previous day
GMT · 2026-11-0307:00–24:00UTC
MST · 2026-11-0300:00–17:00UTC−07:00 Same date
Range starts are included; ends are excluded. 24:00 means midnight at the end of that date. Repeated hours appear separately with their UTC offsets. The strip is proportional to elapsed time.
THE BIGGER PICTURE
2026Some things stay in sync.
The difference between GMT and MST stays the same throughout 2026.
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
−7h
Neither selected clock changes its UTC offset during 2026.
CLOCK CHANGES
No upcoming clock adjustment
Both selected labels are fixed offsets, so seasonal clock changes do not alter this conversion.
PLAN BEYOND A SINGLE DAY
Daily CSVGMT–MST working hours through 2026
Every date calculated with your working windows. 261 selected GMT workdays; public holidays are not applied.
Least shared time1h
Most common1h
Most shared time1h
Days without a 60-min slot0 / 261
A start time that survives the whole year.
Start a 60-minute meeting in GMT 16:00.
These starts fit both working windows on every selected GMT workday in 2026, using a 15-minute start grid. The end of each range is the last valid start.
GMT: 09:00–17:00, Mon, Tue, Wed, Thu, Fri. MST: 09:00–17:00, Mon, Tue, Wed, Thu, Fri.
Calculation details and repeated hours
Overnight shifts belong to their start weekday. Host workday means the source calendar date. Repeated local times use the first occurrence.
THE DETAILS THAT MATTER
GMT to MST: useful answers
Is MST the same as local city time?
MST is fixed at UTC−07:00. GMT to Denver (MT) uses regional rules instead. On 2026-11-03, 09:00 at the source becomes 02:00 at the destination (MST). Choose the local-city option above when that is the clock you mean.
Which cities match MST throughout 2026?
Phoenix, United States keep the same UTC−07:00 offset as fixed MST throughout 2026 under the published rules. Matching an offset does not mean every place uses the abbreviation MST.
Does the GMT–MST time difference change in 2026?
The difference stays constant throughout 2026: MST is 7h behind compared with GMT.
Does this conversion change the calendar date?
09:00 in GMT on 2026-11-03 is 02:00 in MST on 2026-11-03. This selected time stays on the same date in both places. Other times can cross midnight.
Can GMT and MST meet during working hours?
Your selected working windows share 1h on 2026-11-03. The planner above checks the whole meeting duration and shows suitable start times. Edit the windows to match your team.
Related time-zone meanings and conversions
Calculated with IANA 2026e. Working hours are your preferences; public holidays and calendar availability are not included. Our methodology