Offset
The time difference between Onitsha and Mountain Time is 7 hours.
Onitsha (WAT) is ahead of Mountain Time (MDT).
WAT: UTC+1
MDT: UTC-6
Mountain Time is currently observing daylight saving time; Onitsha is not.
When to schedule
Business-hours overlap: 4 PM–5 PM in Onitsha (9 AM–10 AM in Mountain Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 4:00 PM Onitsha (9:00 AM Mountain Time).
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.
Nigeria
- New Year's DayThu, Jan 1
- Good FridayFri, Apr 3
- Easter MondayMon, Apr 6
- Workers' DayFri, May 1
- Children's DayWed, May 27
- Democracy DayFri, Jun 12
- National DayThu, Oct 1
- National Youth DaySun, Nov 1
- Christmas DayFri, Dec 25
- Boxing DayMon, Dec 28
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
Onitsha uses West Africa Time (WAT). To call Nigeria, dial +234.
Mountain Time is also known as MST, or MDT. To call United States, dial +1.
Mountain Time is approximately 7,100 miles northwest of Onitsha.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Onitsha | MST | Day |
|---|---|---|
| 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 | Same day |
| 8:00 am | 1:00 am | Same day |
| 9:00 am | 2:00 am | Same day |
| 10:00 am | 3:00 am | Same day |
| 11:00 am | 4:00 am | Same day |
| 12:00 pm | 5:00 am | Same day |
| 1:00 pm | 6:00 am | Same day |
| 2:00 pm | 7:00 am | Same day |
| 3:00 pm | 8:00 am | Same day |
| 4:00 pm | 9:00 am | Same day |
| 5:00 pm | 10:00 am | Same day |
| 6:00 pm | 11:00 am | Same day |
| 7:00 pm | 12:00 pm | Same day |
| 8:00 pm | 1:00 pm | Same day |
| 9:00 pm | 2:00 pm | Same day |
| 10:00 pm | 3:00 pm | Same day |
| 11:00 pm | 4:00 pm | Same day |
Daylight saving time
Mountain Time observes daylight saving time; Onitsha 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
- 6:19 AM
- Sunset
- 6:47 PM
- Day length
- 12h 28m
- Sunrise
- 5:33 AM
- Sunset
- 8:27 PM
- Day length
- 14h 54m
Daylight overlap: 6h 14m — 12:33 PM–6:47 PM in Onitsha (5:33 AM–11:47 AM in Mountain Time). Both locations are in daylight during this window.
Cities in these zones
Other cities in West Africa Time
Cities in Mountain Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in West Africa Time
- LOS
- KAN
- IBA
- ABV
- PHC
- KAD
- BNI
- ABB
Airports in Mountain Time
- BJC
- DEN
- OGD
- SLC
Related conversions
Common conversions
- What is 9:00 am Onitsha in MST?
- 9:00 am Onitsha is 2:00 am MST.
- What is 12:00 pm Onitsha in MST?
- 12:00 pm Onitsha is 5:00 am MST.
- What is 12:30 pm Onitsha in MST?
- 12:30 pm Onitsha is 5:30 am MST.
- What is 2:00 pm Onitsha in MST?
- 2:00 pm Onitsha is 7:00 am MST.
- What is 5:00 pm Onitsha in MST?
- 5:00 pm Onitsha is 10:00 am MST.
- What is 11:30 pm Onitsha in MST?
- 11:30 pm Onitsha is 4:30 pm MST.