Colombo to Singapore
+2h 30mColombo
ISTSOURCESingapore
SGTGreen rows indicate typical business hours (9 AM - 5 PM)
IST and SGT on the World Map
The map below highlights the IST (India Standard Time) and SGT (Singapore 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.
SGT – Singapore Standard Time
UTC+08:00Singapore Standard Time (SGT) is the time zone for Singapore, 8 hours ahead of UTC.
- •Singapore uses UTC+08:00 despite being at about 104°E longitude (closer to UTC+07:00).
- •Singapore does not observe daylight saving time.
- •The Singapore Exchange (SGX) operates on SGT.
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 Singapore
WikipediaSingapore Standard Time (SGT) is 8 hours ahead of GMT. As Asia's leading financial hub, Singapore bridges business hours between Europe and Australia.
The city-state has the world's highest percentage of millionaires, with 1 in 6 households.
Everything You Need to Know About Colombo and Singapore Time
Colombo runs on India Standard Time (IST) at UTC+05:30. Singapore runs on Singapore Standard Time (SGT) at UTC+08:00. That puts Colombo 2 hours 30 minutes ahead of Singapore — a difference of +2h 30m at the current offsets.
In practice, when it is 9:00 AM in Colombo it is 11:30 AM in Singapore. Midnight in Colombo is 2:30 AM in Singapore. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Colombo to Singapore time conversion table
| Colombo (IST) | Singapore (SGT) | 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 Colombo to Singapore time
- Scheduling a call from Colombo to Singapore: a 10:00 AM start in Colombo lands at 12:30 PM in Singapore, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Colombo and Singapore are inside the 9-to-5 working day between 9:00 AM and 2:30 PM IST time (11:30 AM–5:00 PM SGT). That is roughly 5 hours 30 minutes of usable overlap.
- Watching a live event or market open: Colombo viewers need 11:30 AM in Singapore to catch a 9:00 AM start there, and 9:30 PM if the event is anchored to Colombo.
- 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 9:00 AM–2:30 PM IST as the recurring meeting window if you work primarily from Colombo and need Singapore 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 SGT (Singapore Standard Time)
Singapore Standard Time (SGT) is used in Singapore year-round. Singapore does not observe daylight saving time. Despite being geographically close to the UTC+07:00 zone, Singapore uses UTC+08:00 to align with major trading partners like China, Hong Kong, and Malaysia. Singapore is a major global financial hub.
Best time to call between Colombo and Singapore
Both Colombo and Singapore sit inside the 9 AM – 5 PM working day between 9:00 AM–2:30 PM IST, which is 11:30 AM–5:00 PM SGT. 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 Singapore share 5 hours of working-hours overlap (9:00 AM–2:30 PM IST), so scheduling a live meeting is straightforward.
Colombo is 2 hours 30 minutes ahead of Singapore (IST UTC+05:30 → SGT UTC+08:00). The shared working window is 9:00 AM–2:30 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 Singapore?
Colombo (IST, UTC+05:30) is 2 hours 30 minutes ahead of Singapore (SGT, UTC+08:00). The gap is currently +2h 30m.
How do I convert Colombo time to Singapore time?
Add +2h 30m to Colombo local time. For example, 9:00 AM in Colombo is 11:30 AM in Singapore.
What time is it in Singapore right now?
Singapore uses SGT at UTC+08:00. 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 Singapore from Colombo?
Call between 9:00 AM and 2:30 PM IST — that maps to 11:30 AM–5:00 PM SGT and keeps both parties inside the working day.
Which is ahead, Colombo or Singapore?
Colombo is 2 hours 30 minutes ahead of Singapore. When it is 12:00 PM in Colombo it is 2:30 PM in Singapore.
Do Colombo and Singapore use different time zones?
Colombo (Sri Lanka) uses IST at UTC+05:30, while Singapore (Singapore) uses SGT at UTC+08:00. The IANA identifiers are Asia/Colombo and Asia/Singapore.
Does daylight saving time affect the Colombo–Singapore difference?
Neither zone observes daylight saving time, so the +2h 30m offset between Colombo and Singapore 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 Singapore?
Not normally. The +2h 30m gap only pushes the date over for late-evening times.
What is the time difference between Colombo and Singapore?
Singapore 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 Singapore in?
Singapore Standard Time (SGT) is 8 hours ahead of GMT. As Asia's leading financial hub, Singapore bridges business hours between Europe and Australia.
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 Singapore?
Standard business hours in Singapore are 9:00 AM - 6:00 PM SGT.
What is the best time to schedule a call between Colombo and Singapore?
The best overlap for a call is when both cities are in business hours. Colombo works 9:00 AM - 5:00 PM IST and Singapore works 9:00 AM - 6:00 PM SGT (+2h 30m difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Colombo and Singapore?
Colombo uses LKR (Rs) while Singapore uses SGD (S$). Check current exchange rates when planning travel or business between these cities.
How do Colombo and Singapore compare in size?
Colombo has a population of approximately 752,000 (metro: 5.6 million), while Singapore has approximately 5.5 million (metro: 5.9 million).
What are the major landmarks in Colombo and Singapore?
Colombo is known for Galle Face Green, Gangaramaya Temple, Colombo Lotus Tower. Singapore is famous for Marina Bay Sands, Gardens by the Bay, Merlion.
Do Colombo and Singapore have stock exchanges?
Yes. Colombo has the CSE (Colombo Stock Exchange) and Singapore has the SGX (Singapore 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 SGT timezone?
Major cities in the SGT timezone include Singapore.
What is the UTC offset for SGT?
Singapore Standard Time (SGT) is at UTC+08:00.
What should I know about the SGT timezone?
Singapore uses UTC+08:00 despite being at about 104°E longitude (closer to UTC+07:00). Singapore does not observe daylight saving time.
When is it midnight in Colombo, what time is it in Singapore?
When it is 12:00 AM (midnight) in Colombo (IST), it is +2h 30m later in Singapore (SGT).
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 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 Singapore →