Offset
The time difference between Port Harcourt and Mountain Time is 7 hours.
Port Harcourt (WAT) is ahead of Mountain Time (MDT).
WAT: UTC+1
MDT: UTC-6
Mountain Time is currently observing daylight saving time; Port Harcourt is not.
When to schedule
Business-hours overlap: 4 PM–5 PM in Port Harcourt (9 AM–10 AM in Mountain Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 4:00 PM Port Harcourt (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
Port Harcourt 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 7,150 miles northwest of Port Harcourt.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Port Harcourt | 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; Port Harcourt 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
- 6:28 AM
- Sunset
- 6:50 PM
- Day length
- 12h 21m
- Sunrise
- 5:50 AM
- Sunset
- 8:24 PM
- Day length
- 14h 34m
Daylight overlap: 6h — 12:50 PM–6:50 PM in Port Harcourt (5:50 AM–11:50 AM in Mountain Time). Both locations are in daylight during this window.
Cities in these zones
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 Port Harcourt in MST?
- 9:00 am Port Harcourt is 2:00 am MST.
- What is 12:00 pm Port Harcourt in MST?
- 12:00 pm Port Harcourt is 5:00 am MST.
- What is 12:30 pm Port Harcourt in MST?
- 12:30 pm Port Harcourt is 5:30 am MST.
- What is 2:00 pm Port Harcourt in MST?
- 2:00 pm Port Harcourt is 7:00 am MST.
- What is 5:00 pm Port Harcourt in MST?
- 5:00 pm Port Harcourt is 10:00 am MST.
- What is 11:30 pm Port Harcourt in MST?
- 11:30 pm Port Harcourt is 4:30 pm MST.