Convert JST to SAST

SAST is 7 hours behind JST. JST is UTC+9 and SAST is UTC+2.

Best time to schedule a meeting

Standard 9–5 working hours overlap for 1 hour: 4:00 PM–5:00 PM JST (9:00 AM–10:00 AM SAST). Schedule meetings inside that window.

JST to SAST conversion table

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.

About SAST

South Africa Standard Time (SAST) is UTC+2. It is used in South Africa, Lesotho and Eswatini.

South Africa Standard Time is UTC+2 with no daylight saving, unchanged since 1903 apart from two wartime years. The whole country keeps it, and so do Lesotho and Eswatini. Against the UK it is two hours ahead in winter and one in summer, which is the shift that catches London–Johannesburg standing calls every March and October.

Does this gap change with the seasons?

Neither JST nor SAST shifts with the seasons, so this 7-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 JST conversions

• JST to UTC
• JST to GMT
• JST to EST
• JST to EDT
• JST to CST
• JST to CDT
• JST to MST
• JST to MDT
• JST to PST
• JST to PDT
• JST to AKST
• JST to HST
• JST to BRT
• JST to BST
• JST to CET
• JST to CEST

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