Delhi to Colombo
+0hDelhi
ISTSOURCEColombo
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 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.
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.
Comparing Time Zones: Delhi and Colombo
Delhi runs on India Standard Time (IST) at UTC+05:30. Colombo runs on India Standard Time (IST) at UTC+05:30. That puts Delhi no time difference Colombo — a difference of +0h at the current offsets.
In practice, when it is 9:00 AM in Delhi it is 9:00 AM in Colombo. Midnight in Delhi is 12:00 AM in Colombo. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Delhi to Colombo time conversion table
| Delhi (IST) | Colombo (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 Delhi to Colombo time
- Scheduling a call from Delhi to Colombo: a 10:00 AM start in Delhi lands at 10:00 AM in Colombo, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Delhi and Colombo 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.
- Watching a live event or market open: Delhi viewers need 9:00 AM in Colombo to catch a 9:00 AM start there, and 12:00 AM if the event is anchored to Delhi.
- 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 Delhi and need Colombo 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 Delhi and Colombo
Both Delhi and Colombo 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
Delhi and Colombo share 8 hours of working-hours overlap (9:00 AM–5:00 PM IST), so scheduling a live meeting is straightforward.
Delhi is no time difference Colombo (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 Delhi and Colombo?
Delhi (IST, UTC+05:30) is no time difference Colombo (IST, UTC+05:30). The gap is currently +0h.
How do I convert Delhi time to Colombo time?
Add +0h to Delhi local time. For example, 9:00 AM in Delhi is 9:00 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 +0h offset from Delhi.
What is the best time to call Colombo from Delhi?
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, Delhi or Colombo?
Delhi and Colombo are currently on the same clock.
Do Delhi and Colombo use different time zones?
Delhi (India) uses IST at UTC+05:30, while Colombo (Sri Lanka) uses IST at UTC+05:30. The IANA identifiers are Asia/Kolkata and Asia/Colombo.
Does daylight saving time affect the Delhi–Colombo difference?
Neither zone observes daylight saving time, so the +0h offset between Delhi and Colombo is fixed all year.
Which other cities share Delhi's time zone?
IST also covers Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad and 4 more.
Which countries use IST, Delhi's zone?
IST is used in India, Sri Lanka.
What is the time difference between Delhi and Colombo?
Colombo is +0h from Delhi.
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 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 Delhi?
Standard business hours in Delhi are 9:30 AM - 5:30 PM IST.
What are the business hours in Colombo?
Standard business hours in Colombo are 9:00 AM - 5:00 PM IST.
What is the best time to schedule a call between Delhi and Colombo?
The best overlap for a call is when both cities are in business hours. Delhi works 9:30 AM - 5:30 PM IST and Colombo works 9:00 AM - 5:00 PM IST (+0h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Delhi and Colombo?
Delhi uses INR (₹) while Colombo uses LKR (Rs). Check current exchange rates when planning travel or business between these cities.
How do Delhi and Colombo compare in size?
Delhi has a population of approximately 11 million (metro: 32.9 million), while Colombo has approximately 752,000 (metro: 5.6 million).
What are the major landmarks in Delhi and Colombo?
Delhi is known for India Gate, Red Fort, Qutub Minar. Colombo is famous for Galle Face Green, Gangaramaya Temple, Colombo Lotus Tower.
Do Delhi and Colombo have stock exchanges?
Yes. Delhi has the NSE (National Stock Exchange) and Colombo has the CSE (Colombo 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 Delhi, what time is it in Colombo?
When it is 12:00 AM (midnight) in Delhi (IST), it is +0h later in Colombo (IST).
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