GMT to SAST
Convert London Time — GMT/BST to South Africa Time — Johannesburg — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in London, it's 10:00 AM in Johannesburg. Johannesburg is 1 hour ahead of London. Use the converter above to turn any GMT time into SAST, or scan the hour-by-hour table below for the full day.
GMT to SAST at a glance
Planning a meeting between London and Johannesburg
Planning a call between London and Johannesburg? The best overlap during a standard 9-to-5 workday runs 9:00 AM–4:00 PM GMT (10:00 AM–5:00 PM SAST). Aim for that window to reach both sides during business hours.
Hour-by-hour: London to Johannesburg
A full day mapped from GMT to SAST.
Frequently asked
Is Johannesburg ahead of or behind London?
Johannesburg is 1 hour ahead of London.
What is 12:00 PM GMT in SAST?
12:00 PM in London is 1:00 PM in Johannesburg.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so GMT and SAST automatically reflect the correct daylight-saving offset for the current date.