Time Difference Between Johannesburg and London
As of 31 August 2026, London is 1 hour behind Johannesburg. That number is not constant. Over the course of a year, because of daylight saving changes, London, United Kingdom ranges from 2 hours behind to 1 hour behind relative to Johannesburg, South Africa. The calculator below is always up to date.
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Johannesburg, South Africa
00:34
Tue, Sep 1, 2026
UTC+2 · Africa/Johannesburg
London, United Kingdom
-1h23:34
Mon, Aug 31, 2026
UTC+1 · Europe/London
London is 1 hour behind Johannesburg.
When it is 00:34 in Johannesburg, it is already the previous day in London.
Time zone details
| Place | Local date | Time zone | UTC offset | Summer time |
|---|---|---|---|---|
| Johannesburg | Tuesday, September 1, 2026 | Africa/Johannesburg | UTC+2 | Not observed |
| London | Monday, August 31, 2026 | Europe/London | UTC+1 | Active now |
Hour by hour: Johannesburg to London
Every hour of today in Johannesburg and what it is in London. Highlighted rows fall inside London working hours (09:00–18:00).
| Johannesburg | London |
|---|---|
| 00:00 | 23:00prev day |
| 01:00 | 00:00 |
| 02:00 | 01:00 |
| 03:00 | 02:00 |
| 04:00 | 03:00 |
| 05:00 | 04:00 |
| 06:00 | 05:00 |
| 07:00 | 06:00 |
| 08:00 | 07:00 |
| 09:00 | 08:00 |
| 10:00 | 09:00 |
| 11:00 | 10:00 |
| Johannesburg | London |
|---|---|
| 12:00 | 11:00 |
| 13:00 | 12:00 |
| 14:00 | 13:00 |
| 15:00 | 14:00 |
| 16:00 | 15:00 |
| 17:00 | 16:00 |
| 18:00 | 17:00 |
| 19:00 | 18:00 |
| 20:00 | 19:00 |
| 21:00 | 20:00 |
| 22:00 | 21:00 |
| 23:00 | 22:00 |
Best time to call or meet
Overlapping working hours
10:00–18:00 in Johannesburg (09:00–17:00 in London)
Both places are inside 09:00–18:00 for 8 hours a day. Anything in this window works without asking anyone to stay late.
Reasonable calling hours
09:00–21:00 in Johannesburg (08:00–20:00 in London)
Both people are awake and available between 08:00 and 21:00 local time during this window.
When this difference changes
London puts its clocks back on Sunday, October 25, 2026
The local offset moves from UTC+1 to UTC. After that date, London is 2 hours behind Johannesburg — instead of 1 hour behind, as it is today.
Planning something with more than two places?
Adding a third city usually kills the obvious answer. The Meeting Time Finder takes up to five cities at once and shows only the hours that work for everybody.
Johannesburg and London: common questions
What is the time difference between Johannesburg and London?
As of 31 August 2026, London is 1 hour behind Johannesburg. The gap is not fixed: across the year, London ranges from 2 hours behind to 1 hour behind relative to Johannesburg, as clocks change. The calculator on this page always shows the difference for right now.
When it is 9:00 AM in Johannesburg, what time is it in London?
It is 08:00 AM in London, United Kingdom. Use the time field in the calculator above to check any other hour.
Is London ahead of or behind Johannesburg?
London is behind Johannesburg by 1 hour at the moment. In practical terms, the working day in London starts and ends later in Johannesburg terms.
Do Johannesburg and London observe daylight saving time?
London changes its clocks twice a year; Johannesburg does not. The difference therefore shifts by an hour when London switches: across the year, London ranges from 2 hours behind to 1 hour behind relative to Johannesburg.
What is the best time to call London from Johannesburg?
Working hours overlap between 10:00 and 18:00 Johannesburg time, which is 09:00 to 17:00 in London. Calls inside that window reach both sides during the normal working day.
Related comparisons
Local dates shown for Johannesburg, South Africa (UTC+2) and London, United Kingdom (UTC+1) were generated on Monday, August 31, 2026 UTC and refresh in your browser.