SAST to GMT Time Converter

Convert South Africa Standard Time (SAST) to Greenwich Mean Time (GMT). Both time zones are shown live below; current offset between them is 1 hour behind.

Johannesburg · South Africa Standard Time
22:57:58
Sunday, May 10, 2026
GMT+2 · UTC+02:00
London · Greenwich Mean Time
21:57:58
Sunday, May 10, 2026
GMT+1 · UTC+01:00

Convert a specific time

From: SAST (Johannesburg)
To: GMT (London)
--:--

Daylight Saving status right now

SAST (South Africa Standard Time)
Observes DST
No
GMT (Greenwich Mean Time)
Observes DST
Yes
In DST right now
Yes
Next fall back
2026-10-25
Offset shift
UTC+01:00 → UTC+00:00

Heads up: GMT observes DST while SAST does not. The 1-hour difference shown above will shift by one hour when GMT starts or ends DST.

When can SAST and GMT meet?

00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
SAST
GMT
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Johannesburg (SAST). Each row shows the local working-hours state in that zone for the same moment in time.
7 hours of overlap during standard 9am-5pm working hours.
Best meeting window: 10:00–16:00 SAST (09:00–15:00 GMT).

Hour-by-hour SAST to GMT conversion table

SAST time (Johannesburg)GMT time (London)Status
00:00 Sun23:00 SatOff-hours both sides
01:00 Sun00:00 SunOff-hours both sides
02:00 Sun01:00 SunOff-hours both sides
03:00 Sun02:00 SunOff-hours both sides
04:00 Sun03:00 SunOff-hours both sides
05:00 Sun04:00 SunOff-hours both sides
06:00 Sun05:00 SunOff-hours both sides
07:00 Sun06:00 SunOff-hours both sides
08:00 Sun07:00 SunOff-hours both sides
09:00 Sun08:00 SunSAST working
10:00 Sun09:00 SunBoth at work
11:00 Sun10:00 SunBoth at work
12:00 Sun11:00 SunBoth at work
13:00 Sun12:00 SunBoth at work
14:00 Sun13:00 SunBoth at work
15:00 Sun14:00 SunBoth at work
16:00 Sun15:00 SunBoth at work
17:00 Sun16:00 SunGMT working
18:00 Sun17:00 SunOff-hours both sides
19:00 Sun18:00 SunOff-hours both sides
20:00 Sun19:00 SunOff-hours both sides
21:00 Sun20:00 SunOff-hours both sides
22:00 Sun21:00 SunOff-hours both sides
23:00 Sun22:00 SunOff-hours both sides

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

South Africa Standard Time (SAST)
IANA identifier
Africa/Johannesburg
Current UTC offset
UTC+02:00
Current abbreviation
GMT+2
Major cities in this zone
JohannesburgCape TownDurban
Greenwich Mean Time (GMT)
IANA identifier
Europe/London
Current UTC offset
UTC+01:00
Current abbreviation
GMT+1
Major cities in this zone
LondonManchesterEdinburghBirmingham

Sun today in Johannesburg and London

Johannesburg
Sunrise
06:37
Sunset
17:33
Solar noon
12:05
Daylight
10h 56m
London
Sunrise
05:18
Sunset
20:38
Solar noon
12:58
Daylight
15h 20m

Related converters

GMT to SAST (reverse)SAST to ESTSAST to PSTSAST to UTCSAST to CETSAST to ISTEST to GMTPST to GMTUTC to GMTCET to GMTIST to GMT
Looking for local time? See time in Johannesburg or time in London.

Frequently asked questions

What is the time difference between SAST and GMT right now?+
GMT (Greenwich Mean Time) is currently 1 hour behind SAST (South Africa Standard Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does SAST or GMT observe daylight saving time?+
SAST: does not observe daylight saving time. GMT: observes daylight saving time.
When is the best time to schedule a meeting between SAST and GMT?+
The strongest overlap is 10:00–16:00 SAST (09:00–15:00 GMT), giving 7 hours when both sides are within standard 9am-5pm working hours.
What time is it in London when it is 12:00 noon in Johannesburg?+
When it is 12:00 Sun in Johannesburg (SAST), it is 11:00 Sun in London (GMT).
Which IANA time zone identifiers are used for SAST and GMT?+
SAST maps to "Africa/Johannesburg" in the IANA database. GMT maps to "Europe/London". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Johannesburg ahead of or behind London?+
Whether Johannesburg (SAST) is ahead of or behind London (GMT) depends on the current UTC offsets. Right now GMT is 1 hour behind SAST. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for SAST and GMT?+
SAST is UTC+02:00 (GMT+2) and GMT is UTC+01:00 (GMT+1). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both SAST and GMT?+
Yes. There are 7 hours of overlap during standard 9am-5pm working hours, with the strongest window at 10:00–16:00 SAST.