Offset
The time difference between Japan Standard Time and West Africa Time is 8 hours.
Japan Standard Time (JST) is ahead of West Africa Time (WAT).
JST: UTC+9
WAT: UTC+1
Neither Japan Standard Time nor West Africa Time is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Japan Standard Time and West Africa Time don't overlap on the same weekday. West Africa Time is 8 hours behind Japan Standard Time.
With some flexibility, there’s a workable window outside standard hours:
- 3 PM–8 PM in Japan Standard Time (7 AM–12 PM in West Africa Time) — suggest 5:00 PM Japan Standard Time (9:00 AM West Africa Time).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
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.
Japan
- New Year's DayThu, Jan 1
- Coming of Age DayMon, Jan 12
- Foundation DayWed, Feb 11
- The Emperor's BirthdayMon, Feb 23
- Vernal Equinox DayFri, Mar 20
- Shōwa DayWed, Apr 29
- Constitution Memorial DayWed, May 6
- Greenery DayMon, May 4
- Children's DayTue, May 5
- Marine DayMon, Jul 20
- Mountain DayTue, Aug 11
- Respect for the Aged DayMon, Sep 21
- Autumnal Equinox DayWed, Sep 23
- Sports DayMon, Oct 12
- Culture DayTue, Nov 3
- Labour Thanksgiving DayMon, Nov 23
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
About these zones
Japan Standard Time is also known as JST. To call Japan, dial +81.
West Africa Time is also known as WAT. To call Nigeria, dial +234.
West Africa Time is approximately 8,350 miles northwest of Japan Standard Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| JST | WAT | Day |
|---|---|---|
| 12:00 am | 4:00 pm | -1 day |
| 1:00 am | 5:00 pm | -1 day |
| 2:00 am | 6:00 pm | -1 day |
| 3:00 am | 7:00 pm | -1 day |
| 4:00 am | 8:00 pm | -1 day |
| 5:00 am | 9:00 pm | -1 day |
| 6:00 am | 10:00 pm | -1 day |
| 7:00 am | 11:00 pm | -1 day |
| 8:00 am | 12:00 am | Same day |
| 9:00 am | 1:00 am | Same day |
| 10:00 am | 2:00 am | Same day |
| 11:00 am | 3:00 am | Same day |
| 12:00 pm | 4:00 am | Same day |
| 1:00 pm | 5:00 am | Same day |
| 2:00 pm | 6:00 am | Same day |
| 3:00 pm | 7:00 am | Same day |
| 4:00 pm | 8:00 am | Same day |
| 5:00 pm | 9:00 am | Same day |
| 6:00 pm | 10:00 am | Same day |
| 7:00 pm | 11:00 am | Same day |
| 8:00 pm | 12:00 pm | Same day |
| 9:00 pm | 1:00 pm | Same day |
| 10:00 pm | 2:00 pm | Same day |
| 11:00 pm | 3:00 pm | Same day |
Daylight saving time
Neither Japan Standard Time nor West Africa Time observes daylight saving time. The offset between these zones remains constant year-round.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 4:27 AM
- Sunset
- 6:55 PM
- Day length
- 14h 28m
- Sunrise
- 6:31 AM
- Sunset
- 7:00 PM
- Day length
- 12h 29m
Daylight overlap: 4h 23m — 2:31 PM–6:55 PM in Japan Standard Time (6:31 AM–10:55 AM in West Africa Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Japan Standard Time
Cities in West Africa Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Japan Standard Time
- HND
- NRT
- ITM
- KIX
- UKB
- NGO
- NKM
- CTS
- OKD
- FUK
Airports in West Africa Time
- LOS
- KAN
- IBA
- ABV
- PHC
- KAD
- BNI
- ABB
Related conversions
Common conversions
- What is 9:00 am JST in WAT?
- 9:00 am JST is 1:00 am WAT.
- What is 12:00 pm JST in WAT?
- 12:00 pm JST is 4:00 am WAT.
- What is 12:30 pm JST in WAT?
- 12:30 pm JST is 4:30 am WAT.
- What is 2:00 pm JST in WAT?
- 2:00 pm JST is 6:00 am WAT.
- What is 5:00 pm JST in WAT?
- 5:00 pm JST is 9:00 am WAT.
- What is 11:30 pm JST in WAT?
- 11:30 pm JST is 3:30 pm WAT.