COT to Vietnam
+12hCOT
COTSOURCEVietnam
ICTGreen rows indicate typical business hours (9 AM - 5 PM)
COT and ICT on the World Map
The map below highlights the COT (Colombia Time) and ICT (Indochina 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.
ICT – Indochina Time
UTC+07:00Indochina Time (ICT) is the time zone for Vietnam, Thailand, Laos, and Cambodia, 7 hours ahead of UTC.
- •Bangkok is one of the most visited cities in the world.
- •ICT is 12 hours ahead of EST.
- •Thailand, Vietnam, and Cambodia all share ICT.
Understanding the +12h Gap: COT vs Vietnam
COT runs on Colombia Time (COT) at UTC-05:00. Vietnam runs on Indochina Time (ICT) at UTC+07:00. That puts COT 12 hours ahead of Vietnam — a difference of +12h at the current offsets.
In practice, when it is 9:00 AM in COT it is 9:00 PM in Vietnam. Midnight in COT is 12:00 PM in Vietnam. Neither zone observes daylight saving time, so the offset between them stays constant all year.
COT to Vietnam time conversion table
| COT (COT) | Vietnam (ICT) | Day |
|---|---|---|
| 12:00 AM | 12:00 PM | same day |
| 6:00 AM | 6:00 PM | same day |
| 7:00 AM | 7:00 PM | same day |
| 8:00 AM | 8:00 PM | same day |
| 9:00 AM | 9:00 PM | same day |
| 12:00 PM | 12:00 AM | next day |
| 3:00 PM | 3:00 AM | next day |
| 5:00 PM | 5:00 AM | next day |
| 6:00 PM | 6:00 AM | next day |
| 9:00 PM | 9:00 AM | next day |
Why people convert COT to Vietnam time
- Scheduling a call from COT to Vietnam: a 10:00 AM start in COT lands at 10:00 PM in Vietnam, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +12h gap: COT and Vietnam 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 Vietnam is 9:00 PM in COT.
- Watching a live event or market open: COT viewers need 9:00 PM in Vietnam to catch a 9:00 AM start there, and 12:00 PM if the event is anchored to COT.
- Always state the zone abbreviation, not just the hour. "3:00 PM COT" is unambiguous; "3 PM" across a +12h gap is not.
- With a +12h gap there is no shared 9-to-5 window, so alternate the early start: one week COT takes the early slot, the next week Vietnam 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 ICT (Indochina Time)
Indochina Time (ICT) is used across Southeast Asia including Vietnam, Thailand, Laos, and Cambodia. Indonesia (Western time, WIB) also uses UTC+07:00. ICT does not observe daylight saving time.
Best time to call between COT and Vietnam
With a +12h offset there is no overlap inside a normal 9 AM – 5 PM day. Vietnam opens at 9:00 AM ICT, which is 9:00 PM in COT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
COT and Vietnam have no shared working hours because of the +12h gap. Teams need to alternate early starts or rely on asynchronous handovers.
COT is 12 hours ahead of Vietnam (COT UTC-05:00 → ICT UTC+07:00). 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 Vietnam?
COT (COT, UTC-05:00) is 12 hours ahead of Vietnam (ICT, UTC+07:00). The gap is currently +12h.
How do I convert COT time to Vietnam time?
Add +12h to COT local time. For example, 9:00 AM in COT is 9:00 PM in Vietnam.
What time is it in Vietnam right now?
Vietnam uses ICT at UTC+07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +12h offset from COT.
What is the best time to call Vietnam from COT?
There is no shared working-hours window because of the +12h gap. The closest option is 1:00 PM in COT, which is 1:00 AM in Vietnam.
Which is ahead, COT or Vietnam?
COT is 12 hours ahead of Vietnam. When it is 12:00 PM in COT it is 12:00 AM in Vietnam.
Do COT and Vietnam use different time zones?
COT uses COT at UTC-05:00, while Vietnam (Vietnam) uses ICT at UTC+07:00. The IANA identifiers are America/Bogota and Asia/Ho_Chi_Minh.
Does daylight saving time affect the COT–Vietnam difference?
Neither zone observes daylight saving time, so the +12h offset between COT and Vietnam 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 Vietnam?
Sometimes. The +12h gap is large enough that 8:00 PM or later in COT already falls on the next day in Vietnam.
What is the time difference between COT and Vietnam?
Vietnam is +12h from COT.
What timezone is COT in?
COT operates on its local timezone.
What timezone is Vietnam in?
Vietnam operates on its local timezone.
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 ICT timezone?
Major cities in the ICT timezone include Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.
What is the UTC offset for ICT?
Indochina Time (ICT) is at UTC+07:00.
What should I know about the ICT timezone?
Bangkok is one of the most visited cities in the world. ICT is 12 hours ahead of EST.
When is it midnight in COT, what time is it in Vietnam?
When it is 12:00 AM (midnight) in COT (COT), it is +12h later in Vietnam (ICT).
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