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AUTO follows the operating system. Working hours drive the green banding on every grid. All four persist on this device only.

Time in Kolkata vs Ho Chi Minh City

Kolkata keeps IST (UTC+5:30) and Ho Chi Minh City keeps ICT (UTC+7) today. Ho Chi Minh City is 1½ hours ahead of Kolkata; the rows below read both clocks live.

The working day, side by side

Hours shaded in both rows are inside working hours in both cities: 11:00–18:00 in Ho Chi Minh City (09:00–16:00 your time).

Kolkata and Ho Chi Minh City hour by hour, with the working-hour overlap shaded
City00:00 in Kolkata01:00 in Kolkata02:00 in Kolkata03:00 in Kolkata04:00 in Kolkata05:00 in Kolkata06:00 in Kolkata07:00 in Kolkata08:00 in Kolkata09:00 in Kolkata10:00 in Kolkata11:00 in Kolkata12:00 in Kolkata13:00 in Kolkata14:00 in Kolkata15:00 in Kolkata16:00 in Kolkata17:00 in Kolkata18:00 in Kolkata19:00 in Kolkata20:00 in Kolkata21:00 in Kolkata22:00 in Kolkata23:00 in Kolkata
Kolkata——000102030405060708091011121314151617181920212223
Ho Chi Minh City——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Kolkata and Ho Chi Minh City

Open in the PlannerAdd more cities, find a meeting time that works for everyone, then share it as a link.Open in Watch ViewKeep Kolkata, Ho Chi Minh City and other cities on screen as live clocks, under an animated sky and sun.

Best hours to call

09:00 in Kolkata
Inside working hours on both sides
11:00 in Ho Chi Minh City
10:00 in Kolkata
Inside working hours on both sides
12:00 in Ho Chi Minh City
11:00 in Kolkata
Inside working hours on both sides
13:00 in Ho Chi Minh City
12:00 in Kolkata
Inside working hours on both sides
14:00 in Ho Chi Minh City

Where daylight saving pulls them apart

Neither Kolkata nor Ho Chi Minh City changes its clocks, so the gap above holds all year.

Also useful

Common questions

How many hours ahead is Ho Chi Minh City of Kolkata?

Ho Chi Minh City is 1½ hours ahead of Kolkata right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between Kolkata and Ho Chi Minh City?

Any hour in 09:00–16:00 Kolkata time is inside working hours in both cities.

Do Kolkata and Ho Chi Minh City change clocks on the same date?

Neither city changes its clocks, so the gap between them never moves.