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.

Sri Lanka to Colombia

-10h 30m

Sri Lanka

ISTSOURCE

UTC+05:30

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Colombia

COT

UTC-05:00

HH01

MM30

01:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Sri Lanka

Colombia

12:00 AM

1:30 PM-1

2:00 AM

3:30 PM-1

4:00 AM

5:30 PM-1

6:00 AM

7:30 PM-1

8:00 AM

9:30 PM-1

10:00 AM

11:30 PM-1

12:00 PM

1:30 AM

2:00 PM

3:30 AM

4:00 PM

5:30 AM

6:00 PM

7:30 AM

8:00 PM

9:30 AM

10:00 PM

11:30 AM

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

IST and COT on the World Map

The map below highlights the IST (India Standard Time) and COT (Colombia Time) timezone regions across the globe.

IST Zone

→

COT Zone

Explore all world timezones interactively →

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

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

Sri Lanka vs Colombia: Offsets, DST and Best Call Times

Sri Lanka runs on India Standard Time (IST) at UTC+05:30. Colombia runs on Colombia Standard Time (COT) at UTC-05:00. That puts Sri Lanka 10 hours 30 minutes behind Colombia — a difference of -10h 30m at the current offsets.

In practice, when it is 9:00 AM in Sri Lanka it is 10:30 PM in Colombia on the previous day. Midnight in Sri Lanka is 1:30 PM in Colombia. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Sri Lanka to Colombia time conversion table

Sri Lanka (IST)	Colombia (COT)	Day
12:00 AM	1:30 PM	previous day
6:00 AM	7:30 PM	previous day
7:00 AM	8:30 PM	previous day
8:00 AM	9:30 PM	previous day
9:00 AM	10:30 PM	previous day
12:00 PM	1:30 AM	same day
3:00 PM	4:30 AM	same day
5:00 PM	6:30 AM	same day
6:00 PM	7:30 AM	same day
9:00 PM	10:30 AM	same day

Why people convert Sri Lanka to Colombia time

Scheduling a call from Sri Lanka to Colombia: a 10:00 AM start in Sri Lanka lands at 11:30 PM in Colombia the previous day, so you can confirm the slot without doing the arithmetic yourself.
Handling a -10h 30m gap: Sri Lanka and Colombia 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 Colombia is 10:30 PM in Sri Lanka.
Keeping family and friends in sync: knowing that 8:00 PM in Sri Lanka is 9:30 AM in Colombia makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM IST" is unambiguous; "3 PM" across a -10h 30m gap is not.
With a -10h 30m gap there is no shared 9-to-5 window, so alternate the early start: one week Sri Lanka takes the early slot, the next week Colombia does.

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.

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 Sri Lanka and Colombia

With a -10h 30m offset there is no overlap inside a normal 9 AM – 5 PM day. Colombia opens at 9:00 AM COT, which is 10:30 PM in Sri Lanka, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Sri Lanka and Colombia have no shared working hours because of the -10h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.

Sri Lanka is 10 hours 30 minutes behind Colombia (IST UTC+05:30 → 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 Sri Lanka and Colombia?

Sri Lanka (IST, UTC+05:30) is 10 hours 30 minutes behind Colombia (COT, UTC-05:00). The gap is currently -10h 30m.

How do I convert Sri Lanka time to Colombia time?

Add -10h 30m to Sri Lanka local time. For example, 9:00 AM in Sri Lanka is 10:30 PM in Colombia (previous day).

What time is it in Colombia right now?

Colombia 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 -10h 30m offset from Sri Lanka.

What is the best time to call Colombia from Sri Lanka?

There is no shared working-hours window because of the -10h 30m gap. The closest option is 1:00 PM in Sri Lanka, which is 2:30 AM in Colombia.

Which is behind, Sri Lanka or Colombia?

Sri Lanka is 10 hours 30 minutes behind Colombia. When it is 12:00 PM in Sri Lanka it is 1:30 AM in Colombia.

Do Sri Lanka and Colombia use different time zones?

Sri Lanka (Sri Lanka) uses IST at UTC+05:30, while Colombia (Colombia) uses COT at UTC-05:00. The IANA identifiers are Asia/Colombo and America/Bogota.