Does Hong Kong observe daylight saving time?

No. Hong Kong stays on HKT (UTC+8) all year, so its clocks don't change.

Does Kolkata observe daylight saving time?

No. Kolkata stays on IST (UTC+5:30) all year, so its clocks don't change.

What time is it in Kolkata when it's 9 AM in Hong Kong?

6:30 AM in Kolkata, on the same day.

Hong Kong to Kolkata Meeting Planner

Kolkata is 2 hours 30 minutes behind Hong Kong right now. Their working days overlap for 5 hours 30 minutes today.

Hong Kong · China

11:37 AM

Sun, Oct 18 · HKT

Kolkata · India

9:07 AM

Sun, Oct 18 · IST

Best Meeting Times Between Hong Kong and Kolkata

11:30 AM to 5:00 PM in Hong Kong (9:00 AM to 2:30 PM in Kolkata). That's when both cities are inside working hours, 9 AM to 5 PM, giving 5 hours 30 minutes of overlap today.

Who's meeting

2 of 4 places

Hong KongOrganizerChina ·11:37AMnow
KolkataIndia ·9:07AMnow

Add a city

Add up to 4 places by city, country, time zone or abbreviation, like Tokyo, India or JST. Press "/" to jump here.

Date in Hong Kong

Working hours, everywhere

Best times to meet

Sunday, October 18, 2026, in Hong Kong time.

1:00PMBest · OptimalWorking hours in Hong Kong (13:00) and Kolkata (10:30).
12:30PMOption 2 · OptimalWorking hours in Hong Kong (12:30) and Kolkata (10:00).
1:30PMOption 3 · OptimalWorking hours in Hong Kong (13:30) and Kolkata (11:00).

The whole day

Pick any slot in the Fit row, or use the arrow keys there, to make it the meeting time.

Each column is a half hour of the first place's day. The Fit row grades how well the slot suits everyone; each row shows the local time and whether it's working hours there.
Fit
Hong KongUTC+8
KolkataIST
UTC	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15

Working hours (09–17)Just outside (07–09, 17–20)Late evening (20–23)NightFit: optimal, good, possible, poor

Your meeting

Hong Kong1:00 PM UTC+8Sun, Oct 18
Kolkata10:30 AM ISTSun, Oct 18
UTC2026-10-18 05:00 UTC

What will it cost? Try the meeting cost calculator.

Time difference between Hong Kong and Kolkata

Kolkata is 2 hours 30 minutes behind Hong Kong right now: Kolkata is on IST (UTC+5:30) and Hong Kong on HKT (UTC+8). Neither city changes its clocks, so the gap is the same all year.

Time difference between Hong Kong and Kolkata over the next 12 months
From	Difference	Why
Now	Kolkata 2 hours 30 minutes behind	—

Hong Kong is on Hong Kong Standard Time. Kolkata is on India Standard Time.

Frequently Asked Questions: Hong Kong & Kolkata Scheduling

What is the time difference between Hong Kong and Kolkata?: Kolkata is 2 hours 30 minutes behind Hong Kong right now: Kolkata is on IST (UTC+5:30) and Hong Kong on HKT (UTC+8). Neither city changes its clocks, so the gap is the same all year.
What is the best time to schedule a meeting between Hong Kong and Kolkata?: 11:30 AM to 5:00 PM in Hong Kong (9:00 AM to 2:30 PM in Kolkata). That's when both cities are inside working hours, 9 AM to 5 PM, giving 5 hours 30 minutes of overlap today.
Does Hong Kong observe daylight saving time?: No. Hong Kong stays on HKT (UTC+8) all year, so its clocks don't change.
Does Kolkata observe daylight saving time?: No. Kolkata stays on IST (UTC+5:30) all year, so its clocks don't change.
What time is it in Kolkata when it's 9 AM in Hong Kong?: 6:30 AM in Kolkata, on the same day.

Or see every city pair, or plan with more places in the meeting planner.