Offset
The time difference between Mountain Time and Aleppo is 9 hours.
Mountain Time (MDT) is behind Aleppo (GMT+3).
MDT: UTC-6
GMT+3: UTC+3
Mountain Time is currently observing daylight saving time; Aleppo is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Mountain Time and Aleppo don't overlap on the same weekday. Aleppo is 9 hours ahead of Mountain Time.
With some flexibility, there’s a workable window outside standard hours:
- 7 AM–11 AM in Mountain Time (4 PM–8 PM in Aleppo) — suggest 9:00 AM Mountain Time (6:00 PM Aleppo).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
About these zones
Mountain Time is also known as MST, or MDT. To call United States, dial +1.
Aleppo uses GMT+03:00. To call Syria, dial +963.
Aleppo is approximately 6,650 miles northeast of Mountain Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| MST | Aleppo | Day |
|---|---|---|
| 12:00 am | 9:00 am | Same day |
| 1:00 am | 10:00 am | Same day |
| 2:00 am | 11:00 am | Same day |
| 3:00 am | 12:00 pm | Same day |
| 4:00 am | 1:00 pm | Same day |
| 5:00 am | 2:00 pm | Same day |
| 6:00 am | 3:00 pm | Same day |
| 7:00 am | 4:00 pm | Same day |
| 8:00 am | 5:00 pm | Same day |
| 9:00 am | 6:00 pm | Same day |
| 10:00 am | 7:00 pm | Same day |
| 11:00 am | 8:00 pm | Same day |
| 12:00 pm | 9:00 pm | Same day |
| 1:00 pm | 10:00 pm | Same day |
| 2:00 pm | 11:00 pm | Same day |
| 3:00 pm | 12:00 am | +1 day |
| 4:00 pm | 1:00 am | +1 day |
| 5:00 pm | 2:00 am | +1 day |
| 6:00 pm | 3:00 am | +1 day |
| 7:00 pm | 4:00 am | +1 day |
| 8:00 pm | 5:00 am | +1 day |
| 9:00 pm | 6:00 am | +1 day |
| 10:00 pm | 7:00 am | +1 day |
| 11:00 pm | 8:00 am | +1 day |
Daylight saving time
Mountain Time observes daylight saving time; Aleppo does not. The offset between the two zones changes when Mountain Time transitions: on Sunday, November 1, 2026, clocks fall back from MDT to MST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:33 AM
- Sunset
- 8:28 PM
- Day length
- 14h 56m
- Sunrise
- 5:15 AM
- Sunset
- 7:49 PM
- Day length
- 14h 34m
Daylight overlap: 5h 16m — 5:33 AM–10:49 AM in Mountain Time (2:33 PM–7:49 PM in Aleppo). Both locations are in daylight during this window.
Cities in these zones
Cities in Mountain Time
Other cities in GMT+03:00
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Mountain Time
- BJC
- DEN
- OGD
- SLC
Airports in GMT+03:00
- ALP
- DAM
Related conversions
Common conversions
- What is 9:00 am MST in Aleppo?
- 9:00 am MST is 6:00 pm Aleppo.
- What is 12:00 pm MST in Aleppo?
- 12:00 pm MST is 9:00 pm Aleppo.
- What is 12:30 pm MST in Aleppo?
- 12:30 pm MST is 9:30 pm Aleppo.
- What is 2:00 pm MST in Aleppo?
- 2:00 pm MST is 11:00 pm Aleppo.
- What is 5:00 pm MST in Aleppo?
- 5:00 pm MST is 2:00 am Aleppo, the next day.
- What is 11:30 pm MST in Aleppo?
- 11:30 pm MST is 8:30 am Aleppo, the next day.