Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

Colombia to Vietnam

+12h

Colombia

COTSOURCE

UTC-05:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Vietnam

ICT

UTC+07:00

HH12

MM00

(next day)00:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Colombia

Vietnam

12:00 AM

12:00 PM

2:00 AM

2:00 PM

4:00 AM

4:00 PM

6:00 AM

6:00 PM

8:00 AM

8:00 PM

10:00 AM

10:00 PM

12:00 PM

12:00 AM+1

2:00 PM

2:00 AM+1

4:00 PM

4:00 AM+1

6:00 PM

6:00 AM+1

8:00 PM

8:00 AM+1

10:00 PM

10:00 AM+1

Green 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 Zone

→

ICT Zone

Explore all world timezones interactively →

COT – Colombia Time

UTC-05:00

Colombia Time (COT) is the standard time for Colombia, 5 hours behind UTC.

Countries in COT

Colombia

Major Cities in COT

BogotáMedellínCaliBarranquillaCartagena

Key Facts about COT

•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.

Daylight Saving:No – UTC-05:00 year-round

Learn more about COT on Wikipedia

ICT – Indochina Time

UTC+07:00

Indochina Time (ICT) is the time zone for Vietnam, Thailand, Laos, and Cambodia, 7 hours ahead of UTC.

Countries in ICT

ThailandVietnamCambodiaLaosIndonesia (WIB)

Major Cities in ICT

BangkokHo Chi Minh CityHanoiJakartaPhnom PenhVientiane

Key Facts about ICT

•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.

Daylight Saving:No – UTC+07:00 year-round

Learn more about ICT on Wikipedia

Time Conversion Guide: Colombia to Vietnam

Colombia runs on Colombia Standard Time (COT) at UTC-05:00. Vietnam runs on Indochina Time (ICT) at UTC+07:00. That puts Colombia 12 hours ahead of Vietnam — a difference of +12h at the current offsets.

In practice, when it is 9:00 AM in Colombia it is 9:00 PM in Vietnam. Midnight in Colombia is 12:00 PM in Vietnam. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Colombia to Vietnam time conversion table

Colombia (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 Colombia to Vietnam time

Scheduling a call from Colombia to Vietnam: a 10:00 AM start in Colombia lands at 10:00 PM in Vietnam, so you can confirm the slot without doing the arithmetic yourself.
Handling a +12h gap: Colombia 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 Colombia.
Coordinating a Colombia-based team with Vietnam 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 +12h gap is not.
With a +12h gap there is no shared 9-to-5 window, so alternate the early start: one week Colombia 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 Colombia 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 Colombia, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Colombia and Vietnam have no shared working hours because of the +12h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Colombia 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:

⏳

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 Colombia and Vietnam?

Colombia (COT, UTC-05:00) is 12 hours ahead of Vietnam (ICT, UTC+07:00). The gap is currently +12h.

How do I convert Colombia time to Vietnam time?

Add +12h to Colombia local time. For example, 9:00 AM in Colombia 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 Colombia.

What is the best time to call Vietnam from Colombia?

There is no shared working-hours window because of the +12h gap. The closest option is 1:00 PM in Colombia, which is 1:00 AM in Vietnam.

Which is ahead, Colombia or Vietnam?

Colombia is 12 hours ahead of Vietnam. When it is 12:00 PM in Colombia it is 12:00 AM in Vietnam.

Do Colombia and Vietnam use different time zones?

Colombia (Colombia) 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.