COT to Hong Kong
+13hCOT
COTSOURCEHong Kong
HKTGreen rows indicate typical business hours (9 AM - 5 PM)
COT and HKT on the World Map
The map below highlights the COT (Colombia Time) and HKT (Hong Kong Time) timezone regions across the globe.
COT – Colombia Time
UTC-05:00Colombia Time (COT) is the standard time for Colombia, 5 hours behind UTC.
- •Colombia does not observe daylight saving time.
- •COT is the same offset as EST (UTC-05:00).
- •Bogotá sits at 2,640m elevation, making it one of the highest capital cities.
HKT – Hong Kong Time
UTC+08:00Hong Kong Time (HKT, UTC+08:00) is the time zone for Hong Kong, 8 hours ahead of UTC.
- •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.
About Hong Kong
WikipediaHong 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.
The city has one of the world's most efficient and affordable public transit systems.
Time Conversion Guide: COT to Hong Kong
COT runs on Colombia Time (COT) at UTC-05:00. Hong Kong runs on Hong Kong Standard Time (HKT) at UTC+08:00. That puts COT 13 hours ahead of Hong Kong — a difference of +13h at the current offsets.
In practice, when it is 9:00 AM in COT it is 10:00 PM in Hong Kong. Midnight in COT is 1:00 PM in Hong Kong. Neither zone observes daylight saving time, so the offset between them stays constant all year.
COT to Hong Kong time conversion table
| COT (COT) | Hong Kong (HKT) | Day |
|---|---|---|
| 12:00 AM | 1:00 PM | same day |
| 6:00 AM | 7:00 PM | same day |
| 7:00 AM | 8:00 PM | same day |
| 8:00 AM | 9:00 PM | same day |
| 9:00 AM | 10:00 PM | same day |
| 12:00 PM | 1:00 AM | next day |
| 3:00 PM | 4:00 AM | next day |
| 5:00 PM | 6:00 AM | next day |
| 6:00 PM | 7:00 AM | next day |
| 9:00 PM | 10:00 AM | next day |
Why people convert COT to Hong Kong time
- Scheduling a call from COT to Hong Kong: a 10:00 AM start in COT lands at 11:00 PM in Hong Kong, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +13h gap: COT and Hong Kong have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Hong Kong is 10:00 PM in COT.
- Coordinating a COT-based team with Hong Kong contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM COT" is unambiguous; "3 PM" across a +13h gap is not.
- With a +13h gap there is no shared 9-to-5 window, so alternate the early start: one week COT takes the early slot, the next week Hong Kong does.
About COT (Colombia Time)
Colombia Time (COT) is used throughout Colombia. Colombia does not observe daylight saving time. COT shares the same offset as EST (UTC-05:00). Bogotá, the capital, is one of the largest cities in South America.
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.
Best time to call between COT and Hong Kong
With a +13h offset there is no overlap inside a normal 9 AM – 5 PM day. Hong Kong opens at 9:00 AM HKT, which is 10:00 PM in COT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
COT and Hong Kong have no shared working hours because of the +13h gap. Teams need to alternate early starts or rely on asynchronous handovers.
COT is 13 hours ahead of Hong Kong (COT UTC-05:00 → HKT UTC+08:00). There is no shared 9-to-5 window, so plan around an early or late slot. 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:
Frequently Asked Questions
What is the time difference between COT and Hong Kong?
COT (COT, UTC-05:00) is 13 hours ahead of Hong Kong (HKT, UTC+08:00). The gap is currently +13h.
How do I convert COT time to Hong Kong time?
Add +13h to COT local time. For example, 9:00 AM in COT is 10:00 PM in Hong Kong.
What time is it in Hong Kong right now?
Hong Kong uses HKT at UTC+08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +13h offset from COT.
What is the best time to call Hong Kong from COT?
There is no shared working-hours window because of the +13h gap. The closest option is 1:00 PM in COT, which is 2:00 AM in Hong Kong.
Which is ahead, COT or Hong Kong?
COT is 13 hours ahead of Hong Kong. When it is 12:00 PM in COT it is 1:00 AM in Hong Kong.
Do COT and Hong Kong use different time zones?
COT uses COT at UTC-05:00, while Hong Kong (Hong Kong) uses HKT at UTC+08:00. The IANA identifiers are America/Bogota and Asia/Hong_Kong.
Does daylight saving time affect the COT–Hong Kong difference?
Neither zone observes daylight saving time, so the +13h offset between COT and Hong Kong is fixed all year.
Which other cities share COT's time zone?
COT also covers Bogotá, Medellín, Cali, Barranquilla, Cartagena.
Which countries use COT, COT's zone?
COT is used in Colombia.
Is there a day difference between COT and Hong Kong?
Sometimes. The +13h gap is large enough that 8:00 PM or later in COT already falls on the next day in Hong Kong.
What is the time difference between COT and Hong Kong?
Hong Kong is +13h from COT.
What timezone is COT in?
COT operates on its local timezone.
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 are the business hours in Hong Kong?
Standard business hours in Hong Kong are 9:00 AM - 6:00 PM HKT.
Which countries use COT (Colombia Time)?
COT is used in Colombia.
Does COT observe daylight saving time?
No, COT does not observe daylight saving time and remains at UTC-05:00 year-round.
What are some interesting facts about COT?
Colombia does not observe daylight saving time. COT is the same offset as EST (UTC-05:00).
Which cities are in the HKT timezone?
Major cities in the HKT timezone include Hong Kong, Kowloon, Tsuen Wan, Sha Tin.
What is the UTC offset for HKT?
Hong Kong Time (HKT) is at UTC+08:00.
What should I know about the HKT timezone?
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.
When is it midnight in COT, what time is it in Hong Kong?
When it is 12:00 AM (midnight) in COT (COT), it is +13h later in Hong Kong (HKT).
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