Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

Hong Kong to Colombo

-2h 30m

Hong Kong

HKTSOURCE

Hong Kong · UTC+08:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Colombo

IST

Sri Lanka · UTC+05:30

HH09

MM30

09:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Hong Kong

Colombo

12:00 AM

9:30 PM-1

2:00 AM

11:30 PM-1

4:00 AM

1:30 AM

6:00 AM

3:30 AM

8:00 AM

5:30 AM

10:00 AM

7:30 AM

12:00 PM

9:30 AM

2:00 PM

11:30 AM

4:00 PM

1:30 PM

6:00 PM

3:30 PM

8:00 PM

5:30 PM

10:00 PM

7:30 PM

Green rows indicate typical business hours (9 AM - 5 PM)

HKT and IST on the World Map

The map below highlights the HKT (Hong Kong Time) and IST (India Standard Time) timezone regions across the globe.

HKT Zone

→

IST Zone

Explore all world timezones interactively →

HKT – Hong Kong Time

UTC+08:00

Hong Kong Time (HKT, UTC+08:00) is the time zone for Hong Kong, 8 hours ahead of UTC.

Countries in HKT

Hong Kong SAR

Major Cities in HKT

Hong KongKowloonTsuen WanSha Tin

Key Facts about HKT

•Hong Kong does not observe daylight saving time and has kept UTC+08:00 since 1979.
•HKT shares its offset with China Standard Time, Singapore Time and Philippine Time.
•The Hong Kong Stock Exchange opens at 09:30 HKT.
•Hong Kong Time does not change with the seasons, so its gap to other zones is fixed.

Daylight Saving:No – UTC+08:00 year-round

Learn more about HKT on Wikipedia

IST – India Standard Time

UTC+05:30

India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.

Countries in IST

IndiaSri Lanka

Major Cities in IST

MumbaiDelhiBangaloreKolkataChennaiHyderabadPuneAhmedabadColomboJaipurLucknowSurat

Key Facts about IST

•India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT.
•India uses a single time zone despite spanning 30° of longitude.
•IST is one of only a handful of time zones with a 30-minute offset.
•IST is the most populous single time zone in the world with over 1.4 billion people.
•The Bombay Stock Exchange (BSE) and National Stock Exchange (NSE) operate on IST.

Daylight Saving:No – UTC+05:30 year-round

Learn more about IST on Wikipedia

About Hong Kong

Wikipedia

Hong Kong Time (HKT) is UTC+8 with no daylight saving. As a major financial gateway to China, Hong Kong trading hours overlap with European morning sessions.

Population:7.5 million

Metro:7.5 million

Business Hours:9:00 AM - 6:00 PM HKT

Currency:HKD (HK$)

Stock Exchange:HKEX (Hong Kong Stock Exchange)

Key Landmarks

Victoria PeakTian Tan BuddhaVictoria HarbourStar FerryHong Kong Disneyland

Did You Know?

The city has one of the world's most efficient and affordable public transit systems.

Learn more about HKT timezone →

About Colombo

Wikipedia

Colombo operates on Sri Lanka Time (SLST), UTC+5:30. Sharing India's timezone, Colombo is a key South Asian trade and tourism hub.

Population:752,000

Metro:5.6 million

Business Hours:9:00 AM - 5:00 PM IST

Currency:LKR (Rs)

Stock Exchange:CSE (Colombo Stock Exchange)

Key Landmarks

Galle Face GreenGangaramaya TempleColombo Lotus TowerIndependence SquareDutch Hospital

Did You Know?

Sri Lanka Standard Time (SLST) uses UTC+5:30, same offset as India.

Learn more about IST timezone →

Comparing Time Zones: Hong Kong and Colombo

Hong Kong runs on Hong Kong Standard Time (HKT) at UTC+08:00. Colombo runs on India Standard Time (IST) at UTC+05:30. That puts Hong Kong 2 hours 30 minutes behind Colombo — a difference of -2h 30m at the current offsets.

In practice, when it is 9:00 AM in Hong Kong it is 6:30 AM in Colombo. Midnight in Hong Kong is 9:30 PM in Colombo. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Hong Kong to Colombo time conversion table

Hong Kong (HKT)	Colombo (IST)	Day
12:00 AM	9:30 PM	previous day
6:00 AM	3:30 AM	same day
7:00 AM	4:30 AM	same day
8:00 AM	5:30 AM	same day
9:00 AM	6:30 AM	same day
12:00 PM	9:30 AM	same day
3:00 PM	12:30 PM	same day
5:00 PM	2:30 PM	same day
6:00 PM	3:30 PM	same day
9:00 PM	6:30 PM	same day

Why people convert Hong Kong to Colombo time

Scheduling a call from Hong Kong to Colombo: a 10:00 AM start in Hong Kong lands at 7:30 AM in Colombo, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Hong Kong and Colombo are inside the 9-to-5 working day between 11:30 AM and 5:00 PM HKT time (9:00 AM–2:30 PM IST). That is roughly 5 hours 30 minutes of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in Hong Kong is 5:30 PM in Colombo makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM HKT" is unambiguous; "3 PM" across a -2h 30m gap is not.
Block 11:30 AM–5:00 PM HKT as the recurring meeting window if you work primarily from Hong Kong and need Colombo colleagues present.

About HKT (Hong Kong Time)

Hong Kong Time (HKT) is fixed at UTC+08:00 all year and does not observe daylight saving time. Hong Kong last used summer time in 1979 and has kept a single offset since. HKT shares the UTC+08:00 offset with China Standard Time, Singapore Time, Malaysian Time, Philippine Time and Australian Western Standard Time, but is listed separately because Hong Kong maintains its own timekeeping authority. As a major financial centre, Hong Kong's trading hours set the rhythm for markets across Asia, opening at 09:30 HKT which is 01:30 in London and 20:30 the previous evening in New York.

About IST (India Standard Time)

India Standard Time (IST) is the time observed throughout India and Sri Lanka. It is based on the 82.5°E meridian, passing through Mirzapur in Uttar Pradesh. India uses a single time zone despite spanning roughly 30° of longitude, which has been debated. IST does not observe daylight saving time. India is the world's most populous country, making IST one of the most-used time zones globally. The IT outsourcing industry and call centers operate primarily on IST, making the EST-to-IST conversion one of the most searched timezone conversions.

Best time to call between Hong Kong and Colombo

Both Hong Kong and Colombo sit inside the 9 AM – 5 PM working day between 11:30 AM–5:00 PM HKT, which is 9:00 AM–2:30 PM IST. That gives roughly 5 hours and 30 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

Hong Kong and Colombo share 5 hours of working-hours overlap (11:30 AM–5:00 PM HKT), so scheduling a live meeting is straightforward.

Hong Kong is 2 hours 30 minutes behind Colombo (HKT UTC+08:00 → IST UTC+05:30). The shared working window is 11:30 AM–5:00 PM HKT. Remember to re-check around daylight-saving transitions.

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between Hong Kong and Colombo?

Hong Kong (HKT, UTC+08:00) is 2 hours 30 minutes behind Colombo (IST, UTC+05:30). The gap is currently -2h 30m.

How do I convert Hong Kong time to Colombo time?

Add -2h 30m to Hong Kong local time. For example, 9:00 AM in Hong Kong is 6:30 AM in Colombo.

What time is it in Colombo right now?

Colombo uses IST at UTC+05:30. Use the live converter at the top of this page — it updates in real time and already accounts for the -2h 30m offset from Hong Kong.

What is the best time to call Colombo from Hong Kong?

Call between 11:30 AM and 5:00 PM HKT — that maps to 9:00 AM–2:30 PM IST and keeps both parties inside the working day.

Which is behind, Hong Kong or Colombo?

Hong Kong is 2 hours 30 minutes behind Colombo. When it is 12:00 PM in Hong Kong it is 9:30 AM in Colombo.

Do Hong Kong and Colombo use different time zones?

Hong Kong (Hong Kong) uses HKT at UTC+08:00, while Colombo (Sri Lanka) uses IST at UTC+05:30. The IANA identifiers are Asia/Hong_Kong and Asia/Colombo.

Does daylight saving time affect the Hong Kong–Colombo difference?

Neither zone observes daylight saving time, so the -2h 30m offset between Hong Kong and Colombo is fixed all year.

Which other cities share Hong Kong's time zone?

HKT also covers Hong Kong, Kowloon, Tsuen Wan, Sha Tin.

Which countries use HKT, Hong Kong's zone?

HKT is used in Hong Kong SAR.

Is there a day difference between Hong Kong and Colombo?

Not normally. The -2h 30m gap only pushes the date over the previous day.

What is the time difference between Hong Kong and Colombo?

Colombo is -2h 30m from Hong Kong.

What timezone is Hong Kong in?

Hong Kong Time (HKT) is UTC+8 with no daylight saving. As a major financial gateway to China, Hong Kong trading hours overlap with European morning sessions.

What timezone is Colombo in?

Colombo operates on Sri Lanka Time (SLST), UTC+5:30. Sharing India's timezone, Colombo is a key South Asian trade and tourism hub.

What are the business hours in Hong Kong?

Standard business hours in Hong Kong are 9:00 AM - 6:00 PM HKT.

What are the business hours in Colombo?

Standard business hours in Colombo are 9:00 AM - 5:00 PM IST.

What is the best time to schedule a call between Hong Kong and Colombo?

The best overlap for a call is when both cities are in business hours. Hong Kong works 9:00 AM - 6:00 PM HKT and Colombo works 9:00 AM - 5:00 PM IST (-2h 30m difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Hong Kong and Colombo?

Hong Kong uses HKD (HK$) while Colombo uses LKR (Rs). Check current exchange rates when planning travel or business between these cities.

How do Hong Kong and Colombo compare in size?

Hong Kong has a population of approximately 7.5 million (metro: 7.5 million), while Colombo has approximately 752,000 (metro: 5.6 million).

What are the major landmarks in Hong Kong and Colombo?

Hong Kong is known for Victoria Peak, Tian Tan Buddha, Victoria Harbour. Colombo is famous for Galle Face Green, Gangaramaya Temple, Colombo Lotus Tower.

Do Hong Kong and Colombo have stock exchanges?

Yes. Hong Kong has the HKEX (Hong Kong Stock Exchange) and Colombo has the CSE (Colombo Stock Exchange). The -2h 30m time difference affects trading hour overlaps between these exchanges.

Which countries use HKT (Hong Kong Time)?

HKT is used in Hong Kong SAR.

Does HKT observe daylight saving time?

No, HKT does not observe daylight saving time and remains at UTC+08:00 year-round.

What are some interesting facts about HKT?

Hong Kong does not observe daylight saving time and has kept UTC+08:00 since 1979. HKT shares its offset with China Standard Time, Singapore Time and Philippine Time.