India Standard Time (ist) is used in India. The IANA timezone identifier is Asia/Kolkata.

Hong Kong Time (hkt) is used in Hong Kong. The IANA timezone identifier is Asia/Hong_Kong.

IST to HKT Time Converter

India Standard Time → Hong Kong Time

IST = UTC+5:30HKT = UTC+8

⚠️ IST is ambiguous — on this page it means India Standard Time. It also refers to:

Ireland Standard Time (Dublin) → HKT ↗Israel Standard Time (Jerusalem) → HKT ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

HKT (Hong Kong)

Hong Kong · +2.5h

11:30

London

United Kingdom · -4.5h

04:30

New York

USA · -9.5h

23:30-1 day

Tokyo

Japan · +3.5h

12:30

Dubai

United Arab Emirates · -1.5h

07:30

IST (Mumbai) vs HKT (Hong Kong) — time difference

IST (Mumbai) is 3 hours 30 minutes behind HKT (Hong Kong). When it's noon in IST (Mumbai), it's 14:00 in HKT (Hong Kong).

IST (Mumbai) observes Asia/Kolkata and HKT (Hong Kong) observes Asia/Hong_Kong — a 2.5 hours 30 minutes gap between them.

Shared working hours

Both IST (Mumbai) and HKT (Hong Kong) are simultaneously in business hours for 5.5 hours per day (assuming standard 9:00–17:00 working hours).

00:0006:0012:0018:0024:00

IST (Mumbai)

HKT (Hong Kong)

Overlap (5.5h)

Meeting time recommendations

IST (Mumbai) and HKT (Hong Kong) share 5.5 hours of business hours overlap daily. Showing the 3 most balanced slots — see the time table below for the full window.

09:00 Mumbai / 11:00 Hong Kong✓ Both working

10:00 Mumbai / 12:00 Hong Kong✓ Both working

11:00 Mumbai / 13:00 Hong Kong✓ Both working

Assumes a standard 9 AM–5 PM workday in each location's local timezone.

Public holidays this year

IST (Mumbai)

No upcoming public holidays this year.

HKT (Hong Kong)7 holidays

Jun 19Dragon Boat FestivalSOON

Jul 1Hong Kong Special Administrative Region Establishment Day

Sep 26Day following the Mid-Autumn Festival

Oct 1National Day

Oct 19Chung Yeung Festival

IST (Mumbai) and HKT (Hong Kong) — practical scheduling

Teams in IST (Mumbai) (India) and HKT (Hong Kong) (Hong Kong) face a 2.5-hour time difference day to day. A 5.5-hour shared business hours window makes real-time meetings feasible for both sides within their normal working day.

💡 Practical scheduling guidelines

✅

Schedule at 09:00–10:00 (IST (Mumbai)) for a 11:00–12:00 slot in HKT (Hong Kong) — the sweet spot where both teams are working.

✅

Schedule at 10:00–11:00 (IST (Mumbai)) for a 12:00–13:00 slot in HKT (Hong Kong) — the sweet spot where both teams are working.

✅

Schedule at 11:00–12:00 (IST (Mumbai)) for a 13:00–14:00 slot in HKT (Hong Kong) — the sweet spot where both teams are working.

Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.

Install ClockinSync Free →

Drag the slider at the top to convert any IST (Mumbai) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.

IST (Mumbai) ↔ HKT (Hong Kong)

6h of business hours overlap daily (09:00–17:00)

IST (Mumbai)

HKT (Hong Kong)

00:00

02:30

01:00

03:30

02:00

04:30

03:00

05:30

04:00

06:30

05:00

07:30

06:00

08:30

07:00

09:30Working

08:00

10:30Working

09:00Working

11:30Working

10:00Working

12:30Working

11:00Working

13:30Working

12:00Working

14:30Working

13:00Working

15:30Working

14:00Working

16:30Working

15:00Working

17:30off

16:00Working

18:30off

17:00

19:30

18:00

20:30

19:00

21:30

20:00

22:30

21:00

23:30

22:00

00:30+1d

23:00

01:30+1d

Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.

Frequently Asked Questions

What is the difference between ist and hkt?

India Standard Time (ist) is UTC+5:30 and Hong Kong Time (hkt) is UTC+8. The difference between them is 2.5 hours.

Where is ist used?

India Standard Time (ist) is used in India and surrounding regions. The IANA timezone identifier is Asia/Kolkata. Note: ist is ambiguous and may refer to other timezones.

Where is hkt used?

Hong Kong Time (hkt) is used in Hong Kong and surrounding regions. The IANA timezone identifier is Asia/Hong_Kong.

How do I convert ist to hkt?

Use the interactive converter above. Drag the time slider to any ist time and the hkt equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.

Popular IST conversions

IST → London IST → New York IST → Tokyo IST → Dubai IST → Sydney IST → Paris IST → Berlin IST → Singapore IST → Los Angeles IST → Toronto

Popular HKT conversions

London → HKT New York → HKT Tokyo → HKT Dubai → HKT Sydney → HKT Paris → HKT Berlin → HKT Singapore → HKT Los Angeles → HKT Toronto → HKT