Istanbul to White Waltham Time Converter
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Quick answers
Selected conversion
3:00 pm15:00 TRT (UTC+3), Nov 2, 2026 = 12:00 pm12:00 GMT (UTC+0), Nov 2, 2026
Istanbul is 3 hours ahead of White Waltham.
How the time difference changes
For most of the year, Istanbul is 2 hours ahead of White Waltham. From Oct 25, 2026 to Mar 28, 2027, and from Oct 31, 2027 to Mar 26, 2028, Istanbul is 3 hours ahead of White Waltham.
For most of the year, working hours of 9:00 am to 6:00 pm in Istanbul correspond to 7:00 am to 4:00 pm in White Waltham. At other times of the year, working hours of 9:00 am to 6:00 pm in Istanbul correspond to 6:00 am to 3:00 pm in White Waltham.For most of the year, working hours of 09:00 to 18:00 in Istanbul correspond to 07:00 to 16:00 in White Waltham. At other times of the year, working hours of 09:00 to 18:00 in Istanbul correspond to 06:00 to 15:00 in White Waltham.
Compare Istanbul time with White Waltham time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
TRT (Turkey Time) is 3 hours ahead of GMT (Greenwich Mean Time).
3:00 pm15:00 in Istanbul, Turkey is 12:00 pm12:00 in White Waltham, United Kingdom
Istanbul to White Waltham call time
Best time for a conference call or a meeting is between 12pm-6pm12:00-18:00 in Istanbul which corresponds to 9am-3pm09:00-15:00 in White Waltham
3:00 pm15:00 TRT (Turkey Time) (Istanbul, Turkey). Offset UTC +3:00 hours
12:00 pm12:00 GMT (Greenwich Mean Time) (White Waltham, United Kingdom). Offset UTC 0:00 hours
3:00 pm15:00 Istanbul, Turkey / 12:00 pm12:00 White Waltham, United Kingdom
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
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Istanbul Time Zone and Facts
Time Zone
Istanbul Facts
White Waltham Time Zone and Facts
Time Zone
BST – British Summer Time, UTC+1 (daylight saving time)