Kolkata
Exact time synced with atomic clocks (IANA + NTP)
Thursday, May 21, 2026
India Β· Asia/Kolkata Β· GMT+5:30
Kolkata and London Time Difference
Kolkata is 4.5h ahead of London
London
Exact time synced with atomic clocks (IANA + NTP)
Thursday, May 21, 2026
United Kingdom Β· Europe/London Β· GMT+1
Best time for work calls
If you are scheduling a call between Kolkata and London, the overlap window is limited to typical business hours. When it is 1 pm in Kolkata it is 9 am in London β a workable window for scheduling. The latest reasonable overlap is around 5 pm in Kolkata (12 pm in London). Outside this window there is effectively no good overlap for regular office hours.
Best time for family calls
Kolkata and London have a comfortable window for a family call β no awkward alarms required. Kolkata is 4.5 hours ahead of London, which gives you 4 hours of genuine overlap when both sides are free. Aim for between 6 pm and 10 pm in Kolkata β that lands at 1:30 pm to 5:30 pm in London, 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.
Kolkata
No public holidays on record for this country
Daylight Cycle
π
Dawn4:30:43 AM
βοΈ Sunrise4:55:07 AM
π Solar Noon11:34:32 AM
π Golden Hour5:42:17 PM
π Sunset6:13:57 PM
π Dusk6:38:21 PM
Day length13:18:49
Data via sunrisesunset.io
Current Weather
ConditionβοΈ Thunderstorm
Temperature30Β°C
Feels like37Β°C
Humidity86%
Wind6 mph SE
Data via Open-Meteo Β· Updates every 30 min
Moon Phase
Phaseπ Waxing Crescent
Illumination24%
CycleWaxing
Moon age4.8 days
Moonrise09:05
Moonset22:58
London
Spring Bank Holiday
May 25in 5dWorld Cup Bank Holiday
Jun 15in 26dBattle of the Boyne
Jul 13in 54d
Daylight Cycle
π
Dawn4:18:00 AM
βοΈ Sunrise5:01:01 AM
π Solar Noon12:58:31 PM
π Golden Hour8:05:10 PM
π Sunset8:56:01 PM
π Dusk9:39:02 PM
Day length15:55:00
Data via sunrisesunset.io
Current Weather
ConditionβοΈ Overcast
Temperature13Β°C
Feels like12Β°C
Humidity79%
Wind5 mph SW
Data via Open-Meteo Β· Updates every 30 min
Moon Phase
Phaseπ Waxing Crescent
Illumination24%
CycleWaxing
Moon age4.8 days
Moonrise09:12
Moonset01:24