Sri Lanka to Dhaka
+0h 30mSri Lanka
ISTSOURCEDhaka
BDSTGreen rows indicate typical business hours (9 AM - 5 PM)
IST and BDST on the World Map
The map below highlights the IST (India Standard Time) and BDST (Bangladesh 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.
BDST – Bangladesh Standard Time
UTC+06:00Bangladesh Standard Time (BDST, UTC+06:00) is the time zone for Bangladesh, 6 hours ahead of UTC.
- •Bangladesh uses a single time zone, UTC+06:00, across the entire country.
- •Bangladesh does not observe daylight saving time, so the offset is fixed all year.
- •Dhaka is one of the most densely populated cities globally.
- •BDST is written here to distinguish it from British Summer Time (BST).
About Dhaka
WikipediaDhaka operates on Bangladesh Standard Time (BST), UTC+6. As the world's second-largest garment hub, Dhaka time coordinates global fashion supply chains.
Bangladesh is the world's second-largest garment exporter after China.
Sri Lanka to Dhaka Time Difference – Complete Guide
Sri Lanka runs on India Standard Time (IST) at UTC+05:30. Dhaka runs on Bangladesh Standard Time (BDST) at UTC+06:00. That puts Sri Lanka 30 minutes ahead of Dhaka — a difference of +0h 30m at the current offsets.
In practice, when it is 9:00 AM in Sri Lanka it is 9:30 AM in Dhaka. Midnight in Sri Lanka is 12:30 AM in Dhaka. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Sri Lanka to Dhaka time conversion table
| Sri Lanka (IST) | Dhaka (BDST) | Day |
|---|---|---|
| 12:00 AM | 12:30 AM | same day |
| 6:00 AM | 6:30 AM | same day |
| 7:00 AM | 7:30 AM | same day |
| 8:00 AM | 8:30 AM | same day |
| 9:00 AM | 9:30 AM | same day |
| 12:00 PM | 12:30 PM | same day |
| 3:00 PM | 3:30 PM | same day |
| 5:00 PM | 5:30 PM | same day |
| 6:00 PM | 6:30 PM | same day |
| 9:00 PM | 9:30 PM | same day |
Why people convert Sri Lanka to Dhaka time
- Scheduling a call from Sri Lanka to Dhaka: a 10:00 AM start in Sri Lanka lands at 10:30 AM in Dhaka, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Sri Lanka and Dhaka are inside the 9-to-5 working day between 9:00 AM and 4:30 PM IST time (9:30 AM–5:00 PM BDST). That is roughly 7 hours 30 minutes of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Sri Lanka is 8:30 PM in Dhaka 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 +0h 30m gap is not.
- Block 9:00 AM–4:30 PM IST as the recurring meeting window if you work primarily from Sri Lanka and need Dhaka 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 BDST (Bangladesh Standard Time)
Bangladesh Standard Time (BDST) is the single time zone used across Bangladesh, fixed at UTC+06:00 all year. Bangladesh has not observed daylight saving time since a short-lived experiment in 2009, so the gap between Bangladesh and every other zone is constant. Dhaka, the capital, is one of the most densely populated cities in the world. Because the country sits close to the middle of the UTC+06:00 band, solar noon is near 12:00 for most of the year. BDST is listed separately from British Summer Time, which shares the BST abbreviation but is UTC+01:00.
Best time to call between Sri Lanka and Dhaka
Both Sri Lanka and Dhaka sit inside the 9 AM – 5 PM working day between 9:00 AM–4:30 PM IST, which is 9:30 AM–5:00 PM BDST. That gives roughly 7 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
Sri Lanka and Dhaka share 7 hours of working-hours overlap (9:00 AM–4:30 PM IST), so scheduling a live meeting is straightforward.
Sri Lanka is 30 minutes ahead of Dhaka (IST UTC+05:30 → BDST UTC+06:00). The shared working window is 9:00 AM–4:30 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 Sri Lanka and Dhaka?
Sri Lanka (IST, UTC+05:30) is 30 minutes ahead of Dhaka (BDST, UTC+06:00). The gap is currently +0h 30m.
How do I convert Sri Lanka time to Dhaka time?
Add +0h 30m to Sri Lanka local time. For example, 9:00 AM in Sri Lanka is 9:30 AM in Dhaka.
What time is it in Dhaka right now?
Dhaka uses BDST at UTC+06:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +0h 30m offset from Sri Lanka.
What is the best time to call Dhaka from Sri Lanka?
Call between 9:00 AM and 4:30 PM IST — that maps to 9:30 AM–5:00 PM BDST and keeps both parties inside the working day.
Which is ahead, Sri Lanka or Dhaka?
Sri Lanka is 30 minutes ahead of Dhaka. When it is 12:00 PM in Sri Lanka it is 12:30 PM in Dhaka.
Do Sri Lanka and Dhaka use different time zones?
Sri Lanka (Sri Lanka) uses IST at UTC+05:30, while Dhaka (Bangladesh) uses BDST at UTC+06:00. The IANA identifiers are Asia/Colombo and Asia/Dhaka.
Does daylight saving time affect the Sri Lanka–Dhaka difference?
Neither zone observes daylight saving time, so the +0h 30m offset between Sri Lanka and Dhaka is fixed all year.
Which other cities share Sri Lanka's time zone?
IST also covers Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad and 4 more.
Which countries use IST, Sri Lanka's zone?
IST is used in India, Sri Lanka.
Is there a day difference between Sri Lanka and Dhaka?
Not normally. The +0h 30m gap only pushes the date over for late-evening times.
What is the time difference between Sri Lanka and Dhaka?
Dhaka is +0h 30m from Sri Lanka.
What timezone is Sri Lanka in?
Sri Lanka operates on its local timezone.
What timezone is Dhaka in?
Dhaka operates on Bangladesh Standard Time (BST), UTC+6. As the world's second-largest garment hub, Dhaka time coordinates global fashion supply chains.
What are the business hours in Dhaka?
Standard business hours in Dhaka are 9:00 AM - 5:00 PM BST.
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 BDST timezone?
Major cities in the BDST timezone include Dhaka, Chittagong, Khulna, Rajshahi, Sylhet.
What is the UTC offset for BDST?
Bangladesh Standard Time (BDST) is at UTC+06:00.
What should I know about the BDST timezone?
Bangladesh uses a single time zone, UTC+06:00, across the entire country. Bangladesh does not observe daylight saving time, so the offset is fixed all year.
When is it midnight in Sri Lanka, what time is it in Dhaka?
When it is 12:00 AM (midnight) in Sri Lanka (IST), it is +0h 30m later in Dhaka (BDST).
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