Colombo to Nairobi
-2h 30mColombo
ISTSOURCENairobi
EATGreen rows indicate typical business hours (9 AM - 5 PM)
IST and EAT on the World Map
The map below highlights the IST (India Standard Time) and EAT (East Africa Time) timezone regions across the globe.
IST – India Standard Time
UTC+05:30India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.
- •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.
EAT – East Africa Time
UTC+03:00East Africa Time (EAT) is the time zone for East Africa, 3 hours ahead of UTC.
- •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).
About Colombo
WikipediaColombo operates on Sri Lanka Time (SLST), UTC+5:30. Sharing India's timezone, Colombo is a key South Asian trade and tourism hub.
Sri Lanka Standard Time (SLST) uses UTC+5:30, same offset as India.
About Nairobi
WikipediaNairobi operates on East Africa Time (EAT), UTC+3. As the tech hub of Africa (Silicon Savannah), Nairobi leads African fintech and mobile innovation.
Nairobi National Park is the only national park within a capital city, with lions visible against the skyline.
Everything You Need to Know About Colombo and Nairobi Time
Colombo runs on India Standard Time (IST) at UTC+05:30. Nairobi runs on East Africa Time (EAT) at UTC+03:00. That puts Colombo 2 hours 30 minutes behind Nairobi — a difference of -2h 30m at the current offsets.
In practice, when it is 9:00 AM in Colombo it is 6:30 AM in Nairobi. Midnight in Colombo is 9:30 PM in Nairobi. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Colombo to Nairobi time conversion table
| Colombo (IST) | Nairobi (EAT) | Day |
|---|---|---|
| 12:00 AM | 9:30 PM | previous day |
| 6:00 AM | 3:30 AM | same day |
| 7:00 AM | 4:30 AM | same day |
| 8:00 AM | 5:30 AM | same day |
| 9:00 AM | 6:30 AM | same day |
| 12:00 PM | 9:30 AM | same day |
| 3:00 PM | 12:30 PM | same day |
| 5:00 PM | 2:30 PM | same day |
| 6:00 PM | 3:30 PM | same day |
| 9:00 PM | 6:30 PM | same day |
Why people convert Colombo to Nairobi time
- Scheduling a call from Colombo to Nairobi: a 10:00 AM start in Colombo lands at 7:30 AM in Nairobi, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Colombo and Nairobi are inside the 9-to-5 working day between 11:30 AM and 5:00 PM IST time (9:00 AM–2:30 PM EAT). That is roughly 5 hours 30 minutes of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Colombo is 5:30 PM in Nairobi 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 -2h 30m gap is not.
- Block 11:30 AM–5:00 PM IST as the recurring meeting window if you work primarily from Colombo and need Nairobi colleagues present.
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 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).
Best time to call between Colombo and Nairobi
Both Colombo and Nairobi sit inside the 9 AM – 5 PM working day between 11:30 AM–5:00 PM IST, which is 9:00 AM–2:30 PM EAT. That gives roughly 5 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
Colombo and Nairobi share 5 hours of working-hours overlap (11:30 AM–5:00 PM IST), so scheduling a live meeting is straightforward.
Colombo is 2 hours 30 minutes behind Nairobi (IST UTC+05:30 → EAT UTC+03:00). The shared working window is 11:30 AM–5:00 PM IST. 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 Colombo and Nairobi?
Colombo (IST, UTC+05:30) is 2 hours 30 minutes behind Nairobi (EAT, UTC+03:00). The gap is currently -2h 30m.
How do I convert Colombo time to Nairobi time?
Add -2h 30m to Colombo local time. For example, 9:00 AM in Colombo is 6:30 AM in Nairobi.
What time is it in Nairobi right now?
Nairobi uses EAT at UTC+03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -2h 30m offset from Colombo.
What is the best time to call Nairobi from Colombo?
Call between 11:30 AM and 5:00 PM IST — that maps to 9:00 AM–2:30 PM EAT and keeps both parties inside the working day.
Which is behind, Colombo or Nairobi?
Colombo is 2 hours 30 minutes behind Nairobi. When it is 12:00 PM in Colombo it is 9:30 AM in Nairobi.
Do Colombo and Nairobi use different time zones?
Colombo (Sri Lanka) uses IST at UTC+05:30, while Nairobi (Kenya) uses EAT at UTC+03:00. The IANA identifiers are Asia/Colombo and Africa/Nairobi.
Does daylight saving time affect the Colombo–Nairobi difference?
Neither zone observes daylight saving time, so the -2h 30m offset between Colombo and Nairobi is fixed all year.
Which other cities share Colombo's time zone?
IST also covers Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad and 4 more.
Which countries use IST, Colombo's zone?
IST is used in India, Sri Lanka.
Is there a day difference between Colombo and Nairobi?
Not normally. The -2h 30m gap only pushes the date over the previous day.
What is the time difference between Colombo and Nairobi?
Nairobi is -2h 30m from Colombo.
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 timezone is Nairobi in?
Nairobi operates on East Africa Time (EAT), UTC+3. As the tech hub of Africa (Silicon Savannah), Nairobi leads African fintech and mobile innovation.
What are the business hours in Colombo?
Standard business hours in Colombo are 9:00 AM - 5:00 PM IST.
What are the business hours in Nairobi?
Standard business hours in Nairobi are 8:00 AM - 5:00 PM EAT.
What is the best time to schedule a call between Colombo and Nairobi?
The best overlap for a call is when both cities are in business hours. Colombo works 9:00 AM - 5:00 PM IST and Nairobi works 8:00 AM - 5:00 PM EAT (-2h 30m difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Colombo and Nairobi?
Colombo uses LKR (Rs) while Nairobi uses KES (KSh). Check current exchange rates when planning travel or business between these cities.
How do Colombo and Nairobi compare in size?
Colombo has a population of approximately 752,000 (metro: 5.6 million), while Nairobi has approximately 4.4 million (metro: 6.5 million).
What are the major landmarks in Colombo and Nairobi?
Colombo is known for Galle Face Green, Gangaramaya Temple, Colombo Lotus Tower. Nairobi is famous for Nairobi National Park, Giraffe Centre, David Sheldrick Wildlife Trust.
Do Colombo and Nairobi have stock exchanges?
Yes. Colombo has the CSE (Colombo Stock Exchange) and Nairobi has the NSE (Nairobi Securities Exchange). The -2h 30m time difference affects trading hour overlaps between these exchanges.
Which countries use IST (India Standard Time)?
IST is used in India, Sri Lanka.
Does IST observe daylight saving time?
No, IST does not observe daylight saving time and remains at UTC+05:30 year-round.
What are some interesting 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.
Which cities are in the EAT timezone?
Major cities in the EAT timezone include Nairobi, Addis Ababa, Dar es Salaam, Kampala, Mogadishu, Antananarivo.
What is the UTC offset for EAT?
East Africa Time (EAT) is at UTC+03:00.
What should I know about the EAT timezone?
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.
When is it midnight in Colombo, what time is it in Nairobi?
When it is 12:00 AM (midnight) in Colombo (IST), it is -2h 30m later in Nairobi (EAT).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More Colombo time conversions
- colombo to sri lanka
- colombo to dubai
- colombo to mumbai
- colombo to delhi
- colombo to bangalore
- colombo to kathmandu
- colombo to bangkok
- colombo to singapore
- colombo to hong kong
- colombo to shanghai
- colombo to beijing
- colombo to tokyo
- colombo to osaka
- colombo to new york
- colombo to london
- colombo to sydney
- colombo to los angeles
- colombo to paris
- colombo to berlin
- colombo to toronto
- new york to colombo
- london to colombo
- dubai to colombo
- tokyo to colombo
- singapore to colombo
- sydney to colombo
- los angeles to colombo
- paris to colombo
- delhi to colombo
- mumbai to colombo
- berlin to colombo
- hong kong to colombo
- toronto to colombo
- kathmandu to colombo
See every conversion from Colombo →·See every conversion from Nairobi →