MST to WAT
+8hMST
MSTSOURCEWAT
WATGreen rows indicate typical business hours (9 AM - 5 PM)
MST and WAT on the World Map
The map below highlights the MST (Mountain Standard Time) and WAT (West Africa Time) timezone regions across the globe.
MST – Mountain Standard Time
UTC-07:00Mountain Standard Time (MST) is the time zone for the Mountain region of North America, 7 hours behind UTC.
- •Arizona does not observe daylight saving time, staying on MST year-round.
- •The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
- •Denver, the 'Mile High City', is the largest city fully in MST.
- •MST covers 6 US states entirely and parts of several others.
WAT – West Africa Time
UTC+01:00West Africa Time (WAT) is the time zone for West and Central Africa, 1 hour ahead of UTC.
- •Lagos, Nigeria is the most populous city in Africa.
- •WAT is the same offset as CET (UTC+01:00).
- •Nigeria does not observe daylight saving time.
MST vs WAT: Offsets, DST and Best Call Times
MST runs on Mountain Standard Time (MST) at UTC-07:00. WAT runs on West Africa Time (WAT) at UTC+01:00. That puts MST 8 hours ahead of WAT — a difference of +8h at the current offsets.
In practice, when it is 9:00 AM in MST it is 5:00 PM in WAT. Midnight in MST is 8:00 AM in WAT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
MST to WAT time conversion table
| MST (MST) | WAT (WAT) | Day |
|---|---|---|
| 12:00 AM | 8:00 AM | same day |
| 6:00 AM | 2:00 PM | same day |
| 7:00 AM | 3:00 PM | same day |
| 8:00 AM | 4:00 PM | same day |
| 9:00 AM | 5:00 PM | same day |
| 12:00 PM | 8:00 PM | same day |
| 3:00 PM | 11:00 PM | same day |
| 5:00 PM | 1:00 AM | next day |
| 6:00 PM | 2:00 AM | next day |
| 9:00 PM | 5:00 AM | next day |
Why people convert MST to WAT time
- Scheduling a call from MST to WAT: a 10:00 AM start in MST lands at 6:00 PM in WAT, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +8h gap: MST and WAT have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in WAT is 5:00 PM in MST.
- Keeping family and friends in sync: knowing that 8:00 PM in MST is 4:00 AM in WAT makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM MST" is unambiguous; "3 PM" across a +8h gap is not.
- With a +8h gap there is no shared 9-to-5 window, so alternate the early start: one week MST takes the early slot, the next week WAT does.
About MST (Mountain Standard Time)
Mountain Standard Time (MST) covers the Rocky Mountain region of the United States and Canada. Arizona is notable for not observing daylight saving time, staying on MST year-round (except the Navajo Nation). The time zone includes major cities like Denver, Phoenix, Calgary, and Salt Lake City. During summer, most areas switch to Mountain Daylight Time (MDT, UTC-06:00).
About WAT (West Africa Time)
West Africa Time (WAT) is used across much of West and Central Africa, including Nigeria, the most populous country in Africa. WAT does not observe daylight saving time and shares the same offset as Central European Time (CET).
Best time to call between MST and WAT
With a +8h offset there is no overlap inside a normal 9 AM – 5 PM day. WAT opens at 9:00 AM WAT, which is 5:00 PM in MST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
MST and WAT have no shared working hours because of the +8h gap. Teams need to alternate early starts or rely on asynchronous handovers.
MST is 8 hours ahead of WAT (MST UTC-07:00 → WAT UTC+01:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
MST
☀ Currently in DST
Standard: UTC-07:00 · DST: UTC-06:00
Clocks fall back on Sun, Nov 1, 2026
WAT
Does not observe DST
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between MST and WAT?
MST (MST, UTC-07:00) is 8 hours ahead of WAT (WAT, UTC+01:00). The gap is currently +8h.
How do I convert MST time to WAT time?
Add +8h to MST local time. For example, 9:00 AM in MST is 5:00 PM in WAT.
What time is it in WAT right now?
WAT uses WAT at UTC+01:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +8h offset from MST.
What is the best time to call WAT from MST?
There is no shared working-hours window because of the +8h gap. The closest option is 1:00 PM in MST, which is 9:00 PM in WAT.
Which is ahead, MST or WAT?
MST is 8 hours ahead of WAT. When it is 12:00 PM in MST it is 8:00 PM in WAT.
Does daylight saving time affect the MST–WAT difference?
Neither zone observes daylight saving time, so the +8h offset between MST and WAT is fixed all year.
Which other cities share MST's time zone?
MST also covers Denver, Phoenix, Salt Lake City, Calgary, Edmonton, Albuquerque, El Paso, Tucson and 2 more.
Which countries use MST, MST's zone?
MST is used in United States (Mountain), Canada (Alberta), Mexico (Chihuahua, Sonora).
Is there a day difference between MST and WAT?
Not normally. The +8h gap only pushes the date over for late-evening times.
What is the time difference between MST and WAT?
WAT is +8h from MST.
What timezone is MST in?
MST operates on its local timezone.
What timezone is WAT in?
WAT operates on its local timezone.
Which countries use MST (Mountain Standard Time)?
MST is used in United States (Mountain), Canada (Alberta), Mexico (Chihuahua, Sonora).
Does MST observe daylight saving time?
Yes, MST switches to MDT during summer months.
What are some interesting facts about MST?
Arizona does not observe daylight saving time, staying on MST year-round. The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
Which cities are in the WAT timezone?
Major cities in the WAT timezone include Lagos, Abuja, Douala, Yaoundé, Luanda, Kinshasa, Brazzaville.
What is the UTC offset for WAT?
West Africa Time (WAT) is at UTC+01:00.
What should I know about the WAT timezone?
Lagos, Nigeria is the most populous city in Africa. WAT is the same offset as CET (UTC+01:00).
When is it midnight in MST, what time is it in WAT?
When it is 12:00 AM (midnight) in MST (MST), it is +8h later in WAT (WAT).
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See every conversion from MST →·See every conversion from WAT →