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).

Vietnam to Bogotá

-12h

Vietnam

ICTSOURCE

UTC+07:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Bogotá

COT

Colombia · UTC-05:00

HH12

MM00

00:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Vietnam

Bogotá

12:00 AM

12:00 PM-1

2:00 AM

2:00 PM-1

4:00 AM

4:00 PM-1

6:00 AM

6:00 PM-1

8:00 AM

8:00 PM-1

10:00 AM

10:00 PM-1

12:00 PM

12:00 AM

2:00 PM

2:00 AM

4:00 PM

4:00 AM

6:00 PM

6:00 AM

8:00 PM

8:00 AM

10:00 PM

10:00 AM

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

ICT and COT on the World Map

The map below highlights the ICT (Indochina Time) and COT (Colombia Time) timezone regions across the globe.

ICT Zone

→

COT Zone

Explore all world timezones interactively →

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

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

Understanding the -12h Gap: Vietnam vs Bogotá

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

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

Vietnam to Bogotá time conversion table

Vietnam (ICT)	Bogotá (COT)	Day
12:00 AM	12:00 PM	previous day
6:00 AM	6:00 PM	previous day
7:00 AM	7:00 PM	previous day
8:00 AM	8:00 PM	previous day
9:00 AM	9:00 PM	previous day
12:00 PM	12:00 AM	same day
3:00 PM	3:00 AM	same day
5:00 PM	5:00 AM	same day
6:00 PM	6:00 AM	same day
9:00 PM	9:00 AM	same day

Why people convert Vietnam to Bogotá time

Scheduling a call from Vietnam to Bogotá: a 10:00 AM start in Vietnam lands at 10:00 PM in Bogotá the previous day, so you can confirm the slot without doing the arithmetic yourself.
Handling a -12h gap: Vietnam and Bogotá 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 Bogotá is 9:00 PM in Vietnam.
Keeping family and friends in sync: knowing that 8:00 PM in Vietnam is 8:00 AM in Bogotá makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM ICT" 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 Vietnam takes the early slot, the next week Bogotá does.

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.

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.

Best time to call between Vietnam and Bogotá

With a -12h offset there is no overlap inside a normal 9 AM – 5 PM day. Bogotá opens at 9:00 AM COT, which is 9:00 PM in Vietnam, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

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

Vietnam is 12 hours behind Bogotá (ICT UTC+07:00 → COT UTC-05:00). 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 Vietnam and Bogotá?

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

How do I convert Vietnam time to Bogotá time?

Add -12h to Vietnam local time. For example, 9:00 AM in Vietnam is 9:00 PM in Bogotá (previous day).

What time is it in Bogotá right now?

Bogotá uses COT at UTC-05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -12h offset from Vietnam.