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).

Addis Ababa to Colombo

+2h 30m

Addis Ababa

EATSOURCE

Ethiopia · UTC+03:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Colombo

IST

Sri Lanka · UTC+05:30

HH02

MM30

14:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Addis Ababa

Colombo

12:00 AM

2:30 AM

2:00 AM

4:30 AM

4:00 AM

6:30 AM

6:00 AM

8:30 AM

8:00 AM

10:30 AM

10:00 AM

12:30 PM

12:00 PM

2:30 PM

2:00 PM

4:30 PM

4:00 PM

6:30 PM

6:00 PM

8:30 PM

8:00 PM

10:30 PM

10:00 PM

12:30 AM+1

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

EAT and IST on the World Map

The map below highlights the EAT (East Africa Time) and IST (India Standard Time) timezone regions across the globe.

EAT Zone

→

IST Zone

Explore all world timezones interactively →

EAT – East Africa Time

UTC+03:00

East Africa Time (EAT) is the time zone for East Africa, 3 hours ahead of UTC.

Countries in EAT

KenyaEthiopiaTanzaniaUgandaSomaliaMadagascarEritreaDjibouti

Major Cities in EAT

NairobiAddis AbabaDar es SalaamKampalaMogadishuAntananarivo

Key Facts about EAT

•Nairobi is a major tech hub in Africa, often called 'Silicon Savannah'.
•Ethiopia uses its own calendar, which is 7-8 years behind the Gregorian calendar.
•EAT is the same offset as MSK (Moscow Time).

Daylight Saving:No – UTC+03:00 year-round

Learn more about EAT on Wikipedia

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

About Colombo

Wikipedia

Colombo operates on Sri Lanka Time (SLST), UTC+5:30. Sharing India's timezone, Colombo is a key South Asian trade and tourism hub.

Population:752,000

Metro:5.6 million

Business Hours:9:00 AM - 5:00 PM IST

Currency:LKR (Rs)

Stock Exchange:CSE (Colombo Stock Exchange)

Key Landmarks

Galle Face GreenGangaramaya TempleColombo Lotus TowerIndependence SquareDutch Hospital

Did You Know?

Sri Lanka Standard Time (SLST) uses UTC+5:30, same offset as India.

Learn more about IST timezone →

Time Conversion Guide: Addis Ababa to Colombo

Addis Ababa runs on East Africa Time (EAT) at UTC+03:00. Colombo runs on India Standard Time (IST) at UTC+05:30. That puts Addis Ababa 2 hours 30 minutes ahead of Colombo — a difference of +2h 30m at the current offsets.

In practice, when it is 9:00 AM in Addis Ababa it is 11:30 AM in Colombo. Midnight in Addis Ababa is 2:30 AM in Colombo. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Addis Ababa to Colombo time conversion table

Addis Ababa (EAT)	Colombo (IST)	Day
12:00 AM	2:30 AM	same day
6:00 AM	8:30 AM	same day
7:00 AM	9:30 AM	same day
8:00 AM	10:30 AM	same day
9:00 AM	11:30 AM	same day
12:00 PM	2:30 PM	same day
3:00 PM	5:30 PM	same day
5:00 PM	7:30 PM	same day
6:00 PM	8:30 PM	same day
9:00 PM	11:30 PM	same day

Why people convert Addis Ababa to Colombo time

Scheduling a call from Addis Ababa to Colombo: a 10:00 AM start in Addis Ababa lands at 12:30 PM in Colombo, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Addis Ababa and Colombo are inside the 9-to-5 working day between 9:00 AM and 2:30 PM EAT time (11:30 AM–5:00 PM IST). That is roughly 5 hours 30 minutes of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in Addis Ababa is 10:30 PM in Colombo makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM EAT" is unambiguous; "3 PM" across a +2h 30m gap is not.
Block 9:00 AM–2:30 PM EAT as the recurring meeting window if you work primarily from Addis Ababa and need Colombo colleagues present.

About EAT (East Africa Time)

East Africa Time (EAT) is used in the countries of East Africa including Kenya, Ethiopia, Tanzania, Uganda, and others. EAT does not observe daylight saving time and shares the same offset as Moscow Standard Time (MSK).

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.

Best time to call between Addis Ababa and Colombo

Both Addis Ababa and Colombo sit inside the 9 AM – 5 PM working day between 9:00 AM–2:30 PM EAT, which is 11:30 AM–5:00 PM IST. That gives roughly 5 hours and 30 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

Addis Ababa and Colombo share 5 hours of working-hours overlap (9:00 AM–2:30 PM EAT), so scheduling a live meeting is straightforward.

Addis Ababa is 2 hours 30 minutes ahead of Colombo (EAT UTC+03:00 → IST UTC+05:30). The shared working window is 9:00 AM–2:30 PM EAT. 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 Addis Ababa and Colombo?

Addis Ababa (EAT, UTC+03:00) is 2 hours 30 minutes ahead of Colombo (IST, UTC+05:30). The gap is currently +2h 30m.

How do I convert Addis Ababa time to Colombo time?

Add +2h 30m to Addis Ababa local time. For example, 9:00 AM in Addis Ababa is 11:30 AM in Colombo.

What time is it in Colombo right now?

Colombo uses IST at UTC+05:30. Use the live converter at the top of this page — it updates in real time and already accounts for the +2h 30m offset from Addis Ababa.

What is the best time to call Colombo from Addis Ababa?

Call between 9:00 AM and 2:30 PM EAT — that maps to 11:30 AM–5:00 PM IST and keeps both parties inside the working day.

Which is ahead, Addis Ababa or Colombo?

Addis Ababa is 2 hours 30 minutes ahead of Colombo. When it is 12:00 PM in Addis Ababa it is 2:30 PM in Colombo.

Do Addis Ababa and Colombo use different time zones?

Addis Ababa (Ethiopia) uses EAT at UTC+03:00, while Colombo (Sri Lanka) uses IST at UTC+05:30. The IANA identifiers are Africa/Addis_Ababa and Asia/Colombo.

Does daylight saving time affect the Addis Ababa–Colombo difference?

Neither zone observes daylight saving time, so the +2h 30m offset between Addis Ababa and Colombo is fixed all year.

Which other cities share Addis Ababa's time zone?

EAT also covers Nairobi, Addis Ababa, Dar es Salaam, Kampala, Mogadishu, Antananarivo.

Which countries use EAT, Addis Ababa's zone?

EAT is used in Kenya, Ethiopia, Tanzania, Uganda, Somalia, Madagascar, Eritrea, Djibouti.

Is there a day difference between Addis Ababa and Colombo?

Not normally. The +2h 30m gap only pushes the date over for late-evening times.

What is the time difference between Addis Ababa and Colombo?

Colombo is +2h 30m from Addis Ababa.

What timezone is Addis Ababa in?

Addis Ababa operates on its local timezone.

What timezone is Colombo in?

Colombo operates on Sri Lanka Time (SLST), UTC+5:30. Sharing India's timezone, Colombo is a key South Asian trade and tourism hub.

What are the business hours in Colombo?

Standard business hours in Colombo are 9:00 AM - 5:00 PM IST.

Which countries use EAT (East Africa Time)?

EAT is used in Kenya, Ethiopia, Tanzania, Uganda, Somalia, Madagascar, and 2 more countries.

Does EAT observe daylight saving time?

No, EAT does not observe daylight saving time and remains at UTC+03:00 year-round.

What are some interesting facts about EAT?

Nairobi is a major tech hub in Africa, often called 'Silicon Savannah'. Ethiopia uses its own calendar, which is 7-8 years behind the Gregorian calendar.