Kolkata and Tokyo: Time & DST
Kolkata ticks 3 hours 30 minutes behind the other location
Quick time conversions: Kolkata → Tokyo
Common reference points to help you plan across the time difference.
Setting a 12:00 PM alarm in Kolkata? That's 3:30 PM for Tokyo.
I'm in Kolkata at 4:00 PM — what time is my colleague in Tokyo seeing?—7:30 PM
3:00 PMin Kolkata→6:30 PMin Tokyo
8:00 AM in Kolkata corresponds exactly to 11:30 AM in Tokyo.
6:00 AMin Kolkata→9:30 AMin Tokyo
I'm in Kolkata at 10:00 AM — what time is my colleague in Tokyo seeing?—1:30 PM
Frequently Asked Questions
What is the Kolkata to Tokyo time difference?
Kolkata is 3 hours 30 minutes behind Tokyo. Kolkata uses Asia/Kolkata and Tokyo uses Asia/Tokyo.
When do Kolkata and Tokyo business hours overlap?
With 4.5 hours of overlap, there is enough room for quality collaboration. 09:00 Kolkata / 12:00 Tokyo keeps both sides comfortable.
Does daylight saving time affect the Kolkata–Tokyo difference?
Neither Kolkata nor Tokyo has a DST transition this week. The 3 hours 30 minutes gap remains consistent.
What time does Tokyo show when Kolkata hits midday?
12:00 PM Kolkata time = 3:30 PM in Tokyo.
How does the Kolkata to Tokyo time converter work?
Drag the slider to your desired Kolkata time — Tokyo updates in real time. Or type "3pm", "15:00", or even location-specific like "9am Tokyo".
Are there public holidays that might interrupt meetings between Kolkata and Tokyo?
Tokyo observes Marine Day on July 20. Keep this in mind when coordinating between Kolkata and Tokyo.
What are the IANA timezone identifiers for Kolkata and Tokyo?
Asia/Kolkata covers Kolkata; Asia/Tokyo covers Tokyo. This gives a 3 hours 30 minutes difference.
What time is a 9 AM Kolkata meeting in Tokyo?
9 AM in Kolkata → 12:30 PM in Tokyo. That's within standard working hours in Tokyo.
Kolkata ↔ Tokyo
5h of business hours overlap daily (09:00–17:00)· Showing core hours (08:00–18:00)
Kolkata
Tokyo
Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.