Istanbul
London
Convert TRT to GMT
Turkey Time to Greenwich Mean Time — London is 3 hours behind Istanbul
Quick Facts
Time Difference
-3 hours
TRT Full Name
Turkey Time
GMT Full Name
Greenwich Mean Time
TRT to GMT Conversion Table
Related Conversions
About TRT and GMT Time Zones
TRT (Turkey Time) is UTC+3 and covers cities like Istanbul, Ankara, Izmir. GMT (Greenwich Mean Time) is UTC+0 and covers cities like London, Dublin, Lisbon.
When it's 12:00 PM (noon) in Istanbul (TRT), it's 9:00 AM in London (GMT). The time difference between TRT and GMT is 3 hours — London is behind Istanbul.
With only a 3-hour difference, Istanbul and London share nearly a full business day overlap, making scheduling straightforward.
Use our world clock tool to compare Istanbul and London with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between TRT and GMT?
London (GMT) is 3 hours behind Istanbul (TRT). The offset is -3 hours.
Is GMT ahead or behind TRT?
GMT is 3 hours behind TRT. TRT is UTC+3 and GMT is UTC+0.
When it's 12:00 PM in Istanbul, what time is it in London?
When it's 12:00 PM (noon) in Istanbul (TRT), it's 9:00 AM in London (GMT).
When it's 5:00 PM in Istanbul, what time is it in London?
When it's 5:00 PM in Istanbul (TRT), it's 2:00 PM in London (GMT).