Colombo to Delhi
+0hColombo
ISTSOURCEDelhi
ISTGreen rows indicate typical business hours (9 AM - 5 PM)
IST and IST on the World Map
The map below highlights the IST (India Standard Time) and IST (India Standard 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.
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.
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 Delhi
WikipediaDelhi operates on India Standard Time (IST), UTC+5:30. As India's capital, Delhi time is synchronized with Mumbai and India's National Stock Exchange.
Delhi serves as India's political capital while Mumbai is the financial capital.
Colombo to Delhi Time Difference – Complete Guide
Colombo runs on India Standard Time (IST) at UTC+05:30. Delhi runs on India Standard Time (IST) at UTC+05:30. That puts Colombo no time difference Delhi — a difference of +0h at the current offsets.
In practice, when it is 9:00 AM in Colombo it is 9:00 AM in Delhi. Midnight in Colombo is 12:00 AM in Delhi. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Colombo to Delhi time conversion table
| Colombo (IST) | Delhi (IST) | Day |
|---|---|---|
| 12:00 AM | 12:00 AM | same day |
| 6:00 AM | 6:00 AM | same day |
| 7:00 AM | 7:00 AM | same day |
| 8:00 AM | 8:00 AM | same day |
| 9:00 AM | 9:00 AM | same day |
| 12:00 PM | 12:00 PM | same day |
| 3:00 PM | 3:00 PM | same day |
| 5:00 PM | 5:00 PM | same day |
| 6:00 PM | 6:00 PM | same day |
| 9:00 PM | 9:00 PM | same day |
Why people convert Colombo to Delhi time
- Scheduling a call from Colombo to Delhi: a 10:00 AM start in Colombo lands at 10:00 AM in Delhi, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Colombo and Delhi are inside the 9-to-5 working day between 9:00 AM and 5:00 PM IST time (9:00 AM–5:00 PM IST). That is roughly 8 hours of usable overlap.
- Coordinating a Colombo-based team with Delhi 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 IST" is unambiguous; "3 PM" across a +0h gap is not.
- Block 9:00 AM–5:00 PM IST as the recurring meeting window if you work primarily from Colombo and need Delhi 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 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 Colombo and Delhi
Both Colombo and Delhi sit inside the 9 AM – 5 PM working day between 9:00 AM–5:00 PM IST, which is 9:00 AM–5:00 PM IST. That gives roughly 8 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Colombo and Delhi share 8 hours of working-hours overlap (9:00 AM–5:00 PM IST), so scheduling a live meeting is straightforward.
Colombo is no time difference Delhi (IST UTC+05:30 → IST UTC+05:30). The shared working window is 9:00 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 Delhi?
Colombo (IST, UTC+05:30) is no time difference Delhi (IST, UTC+05:30). The gap is currently +0h.
How do I convert Colombo time to Delhi time?
Add +0h to Colombo local time. For example, 9:00 AM in Colombo is 9:00 AM in Delhi.
What time is it in Delhi right now?
Delhi 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 +0h offset from Colombo.
What is the best time to call Delhi from Colombo?
Call between 9:00 AM and 5:00 PM IST — that maps to 9:00 AM–5:00 PM IST and keeps both parties inside the working day.
Which is ahead, Colombo or Delhi?
Colombo and Delhi are currently on the same clock.
Do Colombo and Delhi use different time zones?
Colombo (Sri Lanka) uses IST at UTC+05:30, while Delhi (India) uses IST at UTC+05:30. The IANA identifiers are Asia/Colombo and Asia/Kolkata.
Does daylight saving time affect the Colombo–Delhi difference?
Neither zone observes daylight saving time, so the +0h offset between Colombo and Delhi 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.
What is the time difference between Colombo and Delhi?
Delhi is +0h 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 Delhi in?
Delhi operates on India Standard Time (IST), UTC+5:30. As India's capital, Delhi time is synchronized with Mumbai and India's National Stock Exchange.
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 Delhi?
Standard business hours in Delhi are 9:30 AM - 5:30 PM IST.
What is the best time to schedule a call between Colombo and Delhi?
The best overlap for a call is when both cities are in business hours. Colombo works 9:00 AM - 5:00 PM IST and Delhi works 9:30 AM - 5:30 PM IST (+0h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Colombo and Delhi?
Colombo uses LKR (Rs) while Delhi uses INR (₹). Check current exchange rates when planning travel or business between these cities.
How do Colombo and Delhi compare in size?
Colombo has a population of approximately 752,000 (metro: 5.6 million), while Delhi has approximately 11 million (metro: 32.9 million).
What are the major landmarks in Colombo and Delhi?
Colombo is known for Galle Face Green, Gangaramaya Temple, Colombo Lotus Tower. Delhi is famous for India Gate, Red Fort, Qutub Minar.
Do Colombo and Delhi have stock exchanges?
Yes. Colombo has the CSE (Colombo Stock Exchange) and Delhi has the NSE (National Stock Exchange). The +0h 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 IST timezone?
Major cities in the IST timezone include Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad.
What is the UTC offset for IST?
India Standard Time (IST) is at UTC+05:30.
What should I know about the IST timezone?
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.
When is it midnight in Colombo, what time is it in Delhi?
When it is 12:00 AM (midnight) in Colombo (IST), it is +0h later in Delhi (IST).
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 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 Delhi →