What's the current time difference between GMT and Istanbul?

Right now, Istanbul (Istanbul) is +3h relative to GMT (GMT · Greenwich Mean Time). The number is live and reflects the current daylight-saving status of both zones.

Does this converter account for daylight saving time?

Yes. The math is done against IANA's tz database via Intl.DateTimeFormat, so DST shifts in either zone show up immediately at the transition. Around DST boundaries the conversion can move by an hour from one week to the next — this page always reflects the current rule.

Why does the TO column sometimes show "+1d" or "−1d"?

When the GMT hour lands on a different calendar day in Istanbul, we flag it so you don't accidentally schedule a meeting on the wrong date. GMT 11 PM is often the next day in eastern-hemisphere zones, for example.

How do I schedule a meeting that works for both zones?

Look at the row highlighted lume green — that's the longest contiguous block where both GMT and Istanbul are in standard working hours (9 AM–5 PM local). Open the planner from the link above to lock a specific time and share a DST-stable link with the other party.

GMT to Istanbul

GMT · Greenwich Mean Time ↔ Istanbul. Right now, Istanbul is +3h relative to GMT. DST is honored live.

From

GMT

—

Istanbul

—

00:00GMT hour of day23:30

Live offset

+3h

GMT (May 23) ↔ Istanbul (May 23)

If GMT or Istanbul just shifted for daylight saving, that's already reflected.

Best meeting overlap

9:00 AM – 1:00 PM

GMT time. Equivalent Istanbul: 12:00 PM – 4:00 PM

Working hours = 9 AM – 5 PM in each zone.

Hour-by-hour

GMT → Istanbul, every hour

GMT · May 23Istanbul · May 23

12:00 AM3:00 AM
1:00 AM4:00 AM
2:00 AM5:00 AM
3:00 AM6:00 AM
4:00 AM7:00 AM
5:00 AM8:00 AM
6:00 AM9:00 AM
7:00 AM10:00 AM
8:00 AM11:00 AM
9:00 AM12:00 PM
10:00 AM1:00 PM
11:00 AM2:00 PM
12:00 PM3:00 PM
1:00 PM4:00 PM
2:00 PM5:00 PM
3:00 PM6:00 PM
4:00 PM7:00 PM
5:00 PM8:00 PM
6:00 PM9:00 PM
7:00 PM10:00 PM
8:00 PM11:00 PM
9:00 PM+1d12:00 AM
10:00 PM+1d1:00 AM
11:00 PM+1d2:00 AM

Both zones in working hours±1d = the TO side lands on a different calendar day

FAQ

GMT ↔ Istanbul, questions answered

What's the current time difference between GMT and Istanbul?: Right now, Istanbul (Istanbul) is +3h relative to GMT (GMT · Greenwich Mean Time). The number is live and reflects the current daylight-saving status of both zones.
Does this converter account for daylight saving time?: Yes. The math is done against IANA's tz database via Intl.DateTimeFormat, so DST shifts in either zone show up immediately at the transition. Around DST boundaries the conversion can move by an hour from one week to the next — this page always reflects the current rule.
Why does the TO column sometimes show "+1d" or "−1d"?: When the GMT hour lands on a different calendar day in Istanbul, we flag it so you don't accidentally schedule a meeting on the wrong date. GMT 11 PM is often the next day in eastern-hemisphere zones, for example.
How do I schedule a meeting that works for both zones?: Look at the row highlighted lume green — that's the longest contiguous block where both GMT and Istanbul are in standard working hours (9 AM–5 PM local). Open the planner from the link above to lock a specific time and share a DST-stable link with the other party.

Reverse — Istanbul to GMT Time in Istanbul Open in planner