TRT to GMT
Convert Turkey Time — Istanbul to London Time — GMT/BST — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in Istanbul, it's 7:00 AM in London. London is 2 hours behind Istanbul. Use the converter above to turn any TRT time into GMT, or scan the hour-by-hour table below for the full day.
TRT to GMT at a glance
Planning a meeting between Istanbul and London
Planning a call between Istanbul and London? The best overlap during a standard 9-to-5 workday runs 11:00 AM–5:00 PM TRT (9:00 AM–3:00 PM GMT). Aim for that window to reach both sides during business hours.
Hour-by-hour: Istanbul to London
A full day mapped from TRT to GMT.
Frequently asked
Is London ahead of or behind Istanbul?
London is 2 hours behind Istanbul.
What is 12:00 PM TRT in GMT?
12:00 PM in Istanbul is 10:00 AM in London.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so TRT and GMT automatically reflect the correct daylight-saving offset for the current date.