London to Johannesburg conversion chart
Every full hour of Tuesday, October 13, 2026 in London, and the time in Johannesburg. Pick another date in the converter and the chart follows.
| London (BST) | Johannesburg (SAST) |
|---|---|
| 12:00 AM 00:00 | 1:00 AM 01:00 |
| 1:00 AM 01:00 | 2:00 AM 02:00 |
| 2:00 AM 02:00 | 3:00 AM 03:00 |
| 3:00 AM 03:00 | 4:00 AM 04:00 |
| 4:00 AM 04:00 | 5:00 AM 05:00 |
| 5:00 AM 05:00 | 6:00 AM 06:00 |
| 6:00 AM 06:00 | 7:00 AM 07:00 |
| 7:00 AM 07:00 | 8:00 AM 08:00 |
| 8:00 AM 08:00 | 9:00 AM 09:00 |
| 9:00 AM 09:00 | 10:00 AM 10:00 |
| 10:00 AM 10:00 | 11:00 AM 11:00 |
| 11:00 AM 11:00 | 12:00 PM 12:00 |
| 12:00 PM 12:00 | 1:00 PM 13:00 |
| 1:00 PM 13:00 | 2:00 PM 14:00 |
| 2:00 PM 14:00 | 3:00 PM 15:00 |
| 3:00 PM 15:00 | 4:00 PM 16:00 |
| 4:00 PM 16:00 | 5:00 PM 17:00 |
| 5:00 PM 17:00 | 6:00 PM 18:00 |
| 6:00 PM 18:00 | 7:00 PM 19:00 |
| 7:00 PM 19:00 | 8:00 PM 20:00 |
| 8:00 PM 20:00 | 9:00 PM 21:00 |
| 9:00 PM 21:00 | 10:00 PM 22:00 |
| 10:00 PM 22:00 | 11:00 PM 23:00 |
| 11:00 PM 23:00 | 12:00 AM 00:00next day |
Time difference over the year
The gap between London and Johannesburg for the next 12 months, with clock changes on both sides taken into account:
- Oct 13, 2026 to Oct 24, 2026: Johannesburg is 1 hour ahead of London
- Oct 25, 2026 to Mar 27, 2027: Johannesburg is 2 hours ahead of London
- Mar 28, 2027 to Oct 12, 2027: Johannesburg is 1 hour ahead of London
Daylight saving time in London and Johannesburg
London turns the clocks forward from GMT to BST at 1:00 AM on the last Sunday in March and back at 2:00 AM on the last Sunday in October, the dates the UK government publishes. In 2026 the changes fall on March 29 and October 25, in 2027 on March 28 and October 31.
Johannesburg stays on SAST (UTC+2) all year: South Africa has no daylight saving time.
The gap takes 2 values across 2026 and 2027: 2 hours, 1 hour. 1 hour holds on most days; the highlighted rows are the 303 days with another gap, because one side has changed its clocks and the other has not:
| From | To | London | Johannesburg | Johannesburg is |
|---|---|---|---|---|
| January 1, 2026 | March 28, 2026 | GMT (UTC) | SAST (UTC+2) | 2 h ahead |
| March 29, 2026 | October 24, 2026 | BST (UTC+1) | SAST (UTC+2) | 1 h ahead |
| October 25, 2026 | March 27, 2027 | GMT (UTC) | SAST (UTC+2) | 2 h ahead |
| March 28, 2027 | October 30, 2027 | BST (UTC+1) | SAST (UTC+2) | 1 h ahead |
| October 31, 2027 | December 31, 2027 | GMT (UTC) | SAST (UTC+2) | 2 h ahead |
Office hours that overlap
With a 9:00 AM to 5:00 PM workday in both cities, this is the shared window for each gap of the year:
- 2 hours apart (GMT with SAST), 155 days of 2026: 6 hours of shared office time: 9:00 AM to 3:00 PM in London is 11:00 AM to 5:00 PM in Johannesburg.
- 1 hour apart (BST with SAST), 210 days of 2026: 7 hours of shared office time: 9:00 AM to 4:00 PM in London is 10:00 AM to 5:00 PM in Johannesburg.
Which time zones London and Johannesburg use
London is on UK time (GMT in winter, BST in summer), which is used in the whole United Kingdom. Johannesburg is on South Africa Standard Time (SAST), used in South Africa, on UTC+2 all year.
Comparing more than two places? Add as many cities as you need in the time zone converter, or find a slot that works for everyone with the meeting planner. For timestamps from logs or APIs, the Unix timestamp converter turns them into readable dates.
Sources
The clock change rules above come from these pages. The dates, the gap table and the office hours are computed from them and checked against the time zone data at build time.
More city pairs
- London to New York
- New York to London
- London to Dubai
- Dubai to London
- London to Sydney
- Sydney to London
- London to Tokyo
- Tokyo to London
- London to Los Angeles
- Los Angeles to London
- New York to Tokyo
- Tokyo to New York
- New York to Los Angeles
- Los Angeles to New York
- New York to Sydney
- Sydney to New York
- New York to Dubai
- Dubai to New York
- Los Angeles to Sydney
- Sydney to Los Angeles
- London to Singapore
- London to Hong Kong
- London to Mumbai
- London to Johannesburg
- London to Toronto
- London to Paris
- New York to Singapore
- New York to Hong Kong
- New York to Mumbai
- New York to Paris
- New York to Toronto
- New York to Mexico City
- New York to São Paulo
- Los Angeles to Tokyo
- Chicago to London
- Tokyo to Sydney
- Sydney to Auckland
- Singapore to Sydney
- Dubai to Mumbai
- Madrid to Mexico City
Frequently asked questions
What is the time difference between London and Johannesburg?
Johannesburg is 1 hour ahead of London on 211 days of the next 12 months, and 2 hours ahead of on 154 days. The gap moves because the two cities change their clocks on different dates, or only one of them does.
What time is it in Johannesburg when it is 9 AM in London?
Most of the year, 9 AM in London is 10:00 AM in Johannesburg. In the weeks when Johannesburg is 2 hours ahead of London, it is 11:00 AM.
What time is it in London when it is noon in Johannesburg?
Noon in Johannesburg is 11:00 AM in London for most of the year, and 10:00 AM in the weeks with the other gap.
When do London and Johannesburg change their clocks?
London changes its clocks on March 29 and October 25 in 2026 and on March 28 and October 31 in 2027. Johannesburg does not change its clocks: South Africa has no daylight saving time. Between those dates the gap is 2 hours instead of 1 hour.
What are good hours for a call between London and Johannesburg?
It depends on the time of year. 2 hours apart (GMT with SAST): 6 hours of shared office time: 9:00 AM to 3:00 PM in London is 11:00 AM to 5:00 PM in Johannesburg. 1 hour apart (BST with SAST): 7 hours of shared office time: 9:00 AM to 4:00 PM in London is 10:00 AM to 5:00 PM in Johannesburg. The times assume a 9 AM to 5 PM workday in both cities; early starts or late evenings widen the window.