Convert WAT to JST

JST is 8 hours ahead of WAT. WAT is UTC+1 and JST is UTC+9.

Best time to schedule a meeting

Standard 9–5 working hours do not overlap at all between WAT and JST. Someone has to take an early or late call — or use asynchronous communication instead.

WAT to JST conversion table

About WAT

West Africa Time (WAT) is UTC+1. It is used in Nigeria, Cameroon, Angola and much of central and western Africa.

West Africa Time is UTC+1 all year, with no daylight saving anywhere that uses it. It covers Lagos, Kinshasa and Luanda — a very large population on a single fixed offset. It matches Central European Time in winter and falls an hour behind it in summer, which means a standing Europe–Nigeria meeting moves twice a year at the European end and never at the African one.

About JST

Japan Standard Time (JST) is UTC+9. It is used in all of Japan, with no daylight saving.

Japan Standard Time is UTC+9 for the whole country and has had no daylight saving since 1951, when the occupation-era experiment was abandoned. Proposals to reintroduce it, most recently before the 2020 Olympics, have failed each time. The offset is shared with South Korea, so Tokyo and Seoul never differ by even a minute.

Does this gap change with the seasons?

Neither WAT nor JST shifts with the seasons, so this 8-hour difference holds all year. That is unusual enough to be worth relying on: most cross-continental gaps move twice a year.

This is the reason scheduling systems store an IANA zone such as Region/City rather than an offset or an abbreviation: the zone knows its own rules and the offset does not.

Frequently asked questions

Other WAT conversions

• WAT to UTC
• WAT to GMT
• WAT to EST
• WAT to EDT
• WAT to CST
• WAT to CDT
• WAT to MST
• WAT to MDT
• WAT to PST
• WAT to PDT
• WAT to AKST
• WAT to HST
• WAT to BRT
• WAT to CEST
• WAT to EET
• WAT to EEST

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