Johannesburg time to London time
London is 2 hours behind Johannesburg in January and 1 hour behind in July (Johannesburg GMT+2/UTC+02:00 in summer; London BST/UTC+01:00). Enter a Johannesburg time below to convert it, or leave it blank to see the current time in both cities.
How to use the Johannesburg to London time
- Type a Johannesburg time (24-hour) and optionally a date, or leave blank for now.
- Click Convert.
- Read the London time and the working-hours table.
Time difference between Johannesburg and London
London is 2 hours behind Johannesburg in January and 1 hour behind in July. London observes daylight saving time and Johannesburg does not, so the difference changes twice a year. Johannesburg uses Africa/Johannesburg time (UTC+02:00 in January, UTC+02:00 in July); London uses Europe/London (UTC+00:00 in January, UTC+01:00 in July).
Working week in Johannesburg and London
Johannesburg: South Africa Standard Time, UTC+2 all year. Office hours 08:00–17:00, weekend Saturday–Sunday. Same clock as Cairo in winter and Central Europe in summer.
London: Office hours 09:00–17:30, weekend Saturday–Sunday. Clocks go forward on the last Sunday of March (BST, UTC+1) and back on the last Sunday of October (GMT).
Quick conversion table (summer difference)
| Johannesburg | London |
|---|---|
| 08:00 | 07:00 |
| 09:00 | 08:00 |
| 10:00 | 09:00 |
| 12:00 | 11:00 |
| 14:00 | 13:00 |
| 16:00 | 15:00 |
| 18:00 | 17:00 |
| 20:00 | 19:00 |
| 22:00 | 21:00 |
Table uses the July difference; the tool above applies the exact rule for any date.
Best time to call between Johannesburg and London
Within normal office hours (09:00–18:00) in both cities: 10:00–17:00 Johannesburg time. For a compromise outside that window, the fairest slots are the ones nearest each side's start or end of day, alternating who takes the inconvenient hour.
Reverse
Need the other direction? See London to Johannesburg, or the general time zone converter.
Frequently asked questions
How many hours ahead is London from Johannesburg?
London is 2 hours behind Johannesburg in January and 1 hour behind in July.
When it is 12:00 noon in Johannesburg, what time is it in London?
11:00 in summer (the same or previous day); use the tool for a specific date.
Does the converter handle daylight saving?
Yes, for the exact date you enter, using the IANA time-zone rules in your browser.
Privacy
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Last updated 2026-09-23.