Convert SAST to JST
JST is 7 hours ahead of SAST. SAST is UTC+2 and JST is UTC+9.
Right now: SAST · JST
Best time to schedule a meeting
Standard 9–5 working hours overlap for 1 hour: 9:00 AM–10:00 AM SAST (4:00 PM–5:00 PM JST). Schedule meetings inside that window.
| SAST | JST | Suitable? |
|---|---|---|
| 9:00 AM | 4:00 PM | working hours |
| 10:00 AM | 5:00 PM | outside 9–5 |
| 11:00 AM | 6:00 PM | outside 9–5 |
| 12:00 PM | 7:00 PM | outside 9–5 |
| 1:00 PM | 8:00 PM | outside 9–5 |
| 2:00 PM | 9:00 PM | outside 9–5 |
| 3:00 PM | 10:00 PM | outside 9–5 |
| 4:00 PM | 11:00 PM | outside 9–5 |
| 5:00 PM | 12:00 AM (next day) | outside 9–5 |
SAST to JST conversion table
| SAST | JST |
|---|---|
| 12:00 AM | 7:00 AM |
| 1:00 AM | 8:00 AM |
| 2:00 AM | 9:00 AM |
| 3:00 AM | 10:00 AM |
| 4:00 AM | 11:00 AM |
| 5:00 AM | 12:00 PM |
| 6:00 AM | 1:00 PM |
| 7:00 AM | 2:00 PM |
| 8:00 AM | 3:00 PM |
| 9:00 AM | 4:00 PM |
| 10:00 AM | 5:00 PM |
| 11:00 AM | 6:00 PM |
| 12:00 PM | 7:00 PM |
| 1:00 PM | 8:00 PM |
| 2:00 PM | 9:00 PM |
| 3:00 PM | 10:00 PM |
| 4:00 PM | 11:00 PM |
| 5:00 PM | 12:00 AM (next day) |
| 6:00 PM | 1:00 AM (next day) |
| 7:00 PM | 2:00 AM (next day) |
| 8:00 PM | 3:00 AM (next day) |
| 9:00 PM | 4:00 AM (next day) |
| 10:00 PM | 5:00 AM (next day) |
| 11:00 PM | 6:00 AM (next day) |
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.
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 SAST nor JST 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
What time is 9:00 AM SAST in JST?
9:00 AM SAST is 4:00 PM JST.
Is JST ahead of SAST?
JST is 7 hours ahead of SAST.
Which time zone does this use?
SAST is UTC+2 and JST is UTC+9. Both abbreviations denote a single fixed offset, so this conversion never shifts with daylight saving — what changes is which abbreviation a place is using at the time.