Live · calculated from the IANA time-zone database

Time difference between London and Johannesburg

Short answer

Johannesburg is 1 hour ahead of London. Right now it is 13:36 in London (GMT+1, UTC+1) and 14:36 in Johannesburg (GMT+2, UTC+2).

Right now

London · United Kingdom

13:36

Tuesday, September 15, 2026

British Summer Time · GMT+1 · UTC+1

Johannesburg · South Africa

14:36

Tuesday, September 15, 2026

South Africa Standard Time · GMT+2 · UTC+2

Times at the moment this page was generated. Reload for a fresh reading.

Does the difference between London and Johannesburg change during the year?

Yes. For 210 days of 2026 the difference is 1 hour, but it moves whenever London or Johannesburg enters or leaves daylight saving time. Here is the full 2026 calendar (dates in UTC):

From	Until	Johannesburg vs London
January 1	March 29	+2 h
March 29	October 25	+1 h
October 25	December 31	+2 h

The highlighted row is the current period. Every date comes from each zone's official rules, not from a hand-typed table.

Best time to call Johannesburg from London (and vice versa)

The window in which both cities are inside their 9:00–17:00 working day runs from 09:00 to 16:00 in London, which is 10:00 to 17:00 in Johannesburg: 7 hours of overlap per day. For a call that disturbs nobody, aim for the middle of that window.

Outside that window, the practical rule: mornings in Johannesburg are afternoons in London. Avoid any hour that falls before 8:00 or after 21:00 in either city.

London to Johannesburg conversion table

Each London hour and its equivalent in Johannesburg today. Rows shaded green are working hours (9:00–17:00) in both cities at once.

London time · Tue, Sep 15	Johannesburg time
00:00	01:00
01:00	02:00
02:00	03:00
03:00	04:00
04:00	05:00
05:00	06:00
06:00	07:00
07:00	08:00
08:00	09:00
09:00	10:00
10:00	11:00
11:00	12:00
12:00	13:00
13:00	14:00
14:00	15:00
15:00	16:00
16:00	17:00
17:00	18:00
18:00	19:00
19:00	20:00
20:00	21:00
21:00	22:00
22:00	23:00
23:00	00:00next day

Looking for it the other way round? This page covers both directions: Johannesburg to London is the same difference with the sign flipped.

The two time zones

London — Europe/London

London sits on the Greenwich meridian: GMT (UTC+0) in winter and British Summer Time (UTC+1) from the last Sunday of March to the last Sunday of October.

Johannesburg — Africa/Johannesburg

Johannesburg is on South Africa Standard Time, a fixed UTC+2 — level with Central Europe in summer and one hour ahead of it in winter.

Frequently asked questions

How many hours difference between London and Johannesburg?

Johannesburg is 1 hour ahead of London. For most of the year (210 days) the difference is 1 hour; it shifts during the weeks when one of the two cities enters or leaves daylight saving time.

When it is 12:00 noon in London, what time is it in Johannesburg?

13:00 in Johannesburg (at today's difference of 1 hour).

What is the best time for a meeting between London and Johannesburg?

Between 09:00 and 16:00 in London, which is 10:00–17:00 in Johannesburg: 7 hours of overlap inside both cities' 9:00–17:00 working day.

Do London and Johannesburg observe daylight saving time?

London: yes. Johannesburg: no. Because only one of them changes its clocks, the difference moves by one hour twice a year.

What time zone is London in? And Johannesburg?

London: British Summer Time (Europe/London, UTC+1). Johannesburg: South Africa Standard Time (Africa/Johannesburg, UTC+2).

Tools

Meeting grid — add both cities and click a slot

Time zone converter — any city, any time

Working hours overlap calculator

Daylight saving time 2027 — all dates