
Exact time synced with atomic clocks (IANA + NTP)
Sunday, April 5, 2026
Turkey · Europe/Istanbul · GMT+3
Istanbul is 2.5h behind Kolkata

Exact time synced with atomic clocks (IANA + NTP)
Sunday, April 5, 2026
Turkey · Europe/Istanbul · GMT+3

Exact time synced with atomic clocks (IANA + NTP)
Sunday, April 5, 2026
India · Asia/Kolkata · GMT+5:30
If you are scheduling a call between Istanbul and Kolkata, the overlap window is limited to typical business hours. When it is 9 am in Istanbul it is 11 am in Kolkata — a workable window for scheduling. The latest reasonable overlap is around 2 pm in Istanbul (5 pm in Kolkata). Outside this window there is effectively no good overlap for regular office hours.
Istanbul and Kolkata have a comfortable window for a family call — no awkward alarms required. Istanbul is 2.5 hours behind Kolkata, which gives you about an hour of genuine overlap when both sides are free. Aim for between 6 pm and 6:30 pm in Istanbul — that lands at 8:30 pm to 9 pm in Kolkata, after the school run and before anyone's ready for bed. For a Sunday catch-up or a midweek check-in, this is the sweet spot.
National Independence & Children's Day
Ulusal Egemenlik ve Çocuk Bayramı
Labour Day
İşçi Bayramı
Atatürk Commemoration & Youth Day
Atatürk'ü Anma, Gençlik ve Spor Bayramı
Via Nager.Date
Data via sunrisesunset.io
Data via Open-Meteo · Updates every 30 min
No holiday data available for this country.
Via Nager.Date
Data via sunrisesunset.io
Data via Open-Meteo · Updates every 30 min