SGT to IST Converter
Convert time between Singapore Standard Time (SGT) and India Standard Time (IST)
Singapore Standard Time (SGT)
India Standard Time (IST)
Time Difference
India Standard Time (IST) is 0 hours ahead of Singapore Standard Time (SGT)
Select Date
Select Time
Quick Reference
| SGT | IST |
|---|---|
| 10:00 | 07:30 |
| 12:00 | 09:30 |
| 14:00 | 11:30 |
| 16:00 | 13:30 |
| 18:00 | 15:30 |
| 20:00 | 17:30 |
| 22:00 | 19:30 |
| 00:00 | 21:30 |
| 02:00 | 23:30 |
| 04:00 | 01:30 |
| 06:00 | 03:30 |
| 08:00 | 05:30 |
Top 10 Most Common Time Zones
| Abbreviation | Full Name | UTC Offset | Typical Use |
|---|---|---|---|
| UTC | Coordinated Universal Time | UTC ±0 | Global reference standard (servers, logs, APIs) |
| EST / EDT | Eastern (US) Time | UTC −5 / −4 | New York, Toronto — North American business hub |
| CST / CDT | Central (US) Time | UTC −6 / −5 | Chicago, Dallas — US central business region |
| PST / PDT | Pacific (US) Time | UTC −8 / −7 | San Francisco, Los Angeles — tech industry standard |
| GMT / BST | Greenwich Mean / British Summer Time | UTC 0 / +1 | UK, used globally as a reference with UTC |
| CET / CEST | Central European (Summer) Time | UTC +1 / +2 | Paris, Berlin, Amsterdam — EU business core |
| IST | India Standard Time | UTC +5:30 | India — major IT & outsourcing region |
| CST | China Standard Time | UTC +8 | Beijing, Shanghai — East Asia business hub |
| JST | Japan Standard Time | UTC +9 | Tokyo — finance & tech hub |
| AEST / AEDT | Australian Eastern (Daylight) Time | UTC +10 / +11 | Sydney, Melbourne — APAC regional business |
Why Time Zone Abbreviations Are Ambiguous
Unlike standardized identifiers (like America/New_York or Europe/London from the IANA tz database), abbreviations such as "CST" or "IST" are not globally unique. They can refer to different time zones depending on context — country, region, or even time of year (due to daylight saving time).
Common Ambiguous Time Zone Abbreviations
| Abbrev. | Common Meaning(s) | UTC Offset | Region(s) |
|---|---|---|---|
| CST | Central Standard Time / China Standard Time / Cuba Standard Time | UTC−6 / UTC+8 / UTC−5 | North America, China, Cuba |
| IST | Indian Standard Time / Irish Standard Time / Israel Standard Time | UTC+5:30 / UTC+1 / UTC+2 | India, Ireland, Israel |
| AST | Atlantic Standard Time / Arabia Standard Time | UTC−4 / UTC+3 | Caribbean, Canada, Middle East |
| PST | Pacific Standard Time / Philippine Standard Time | UTC−8 / UTC+8 | North America, Philippines |
| EST | Eastern Standard Time (North America / Australia) | UTC−5 / UTC+10 | North America, Australia |
✅ Best Practice
To avoid ambiguity, always:
- Use IANA tz identifiers — e.g.,
America/New_Yorkinstead of "EST" - Specify UTC offset explicitly — e.g.,
UTC−5when abbreviations must be used - Include the full timezone name — e.g., "Eastern Standard Time (EST)" with UTC offset
About SGT to IST Time Conversion
Converting time between Singapore Standard Time (SGT) and India Standard Time (IST) is a daily requirement for cross-Asia business and family connections. SGT is UTC+8 year-round, while IST is UTC+5:30, putting Singapore 2 hours 30 minutes ahead of India. Neither side observes daylight saving, so the 2.5-hour offset is constant 365 days a year — but the half-hour part trips up a lot of people scheduling on round-hour calendars.
This time zone converter uses the IANA timezone database to ensure accurate calculations including the half-hour offset. India spans a vast territory but observes a single IST zone, from Mumbai and Delhi to Kolkata and Bengaluru. Whether you're scheduling Singapore-Bengaluru tech meetings, planning travel to India, or coordinating with family across the Indian subcontinent, our converter provides reliable results.
Common Use Cases for SGT to IST Conversion
Business & Work
- Scheduling meetings between Singapore and Bengaluru, Mumbai or Delhi offices
- Coordinating with Indian IT, fintech and outsourcing partners across the working day
- Planning conference calls with subcontinental teams given the half-hour offset
Personal & Travel
- Planning travel between Singapore and India
- Coordinating with family and friends in Mumbai, Delhi, Bengaluru, Chennai or Kolkata
- Scheduling virtual events bridging Southeast Asia and the Indian subcontinent
Time Zone Information
Singapore Standard Time (SGT)
- UTC Offset: UTC+8
- IANA Timezone: Asia/Singapore
- Daylight Saving: No daylight saving time (consistent year-round)
- Major Cities: Singapore
- Coverage: Republic of Singapore
India Standard Time (IST)
- UTC Offset: UTC+5:30
- IANA Timezone: Asia/Kolkata
- Daylight Saving: No daylight saving time (consistent year-round)
- Major Cities: Mumbai, Delhi, Bengaluru, Chennai, Kolkata, Hyderabad, Pune, Ahmedabad
- Coverage: Republic of India (single nationwide timezone)
Quick Reference: SGT to IST
Remember: IST is 2 hours 30 minutes behind SGT, all year. The half-hour offset means a round-hour Singapore meeting becomes a :30 slot in India.
Frequently Asked Questions
What is the time difference between SGT and IST?
Singapore Standard Time (SGT) is UTC+8, while India Standard Time (IST) is UTC+5:30. SGT is exactly 2 hours 30 minutes ahead of IST. When it is 12:00 PM in Singapore, it is 9:30 AM the same day in Mumbai or Bengaluru.
When does this SGT to IST conversion apply?
All year round. Neither Singapore nor India observes daylight saving, so the 2.5-hour offset is constant 12 months a year. The half-hour part is unusual and easy to forget on round-hour calendars.
Does India observe daylight saving time?
No. India has never observed daylight saving time. The entire country uses a single India Standard Time (IST) at UTC+5:30 year-round, despite spanning a huge east-west range.
What are the best times for SGT-IST business calls?
Singapore afternoon (1:30 to 5:30 PM SGT) maps to Indian morning to early afternoon (11:00 AM to 3:00 PM IST) — an excellent overlap with Indian business hours. For an Indian end-of-day slot, 7:30 to 9:30 PM SGT reaches 5:00 to 7:00 PM IST.
Which countries or regions use IST?
India Standard Time is used across the entire Republic of India year-round. Major cities include Mumbai, Delhi, Bengaluru, Chennai, Kolkata, Hyderabad, Pune and Ahmedabad. UTC+5:30 is also shared with Sri Lanka (where it is called SLST).
Which countries or regions use SGT?
Singapore Standard Time is used only in the Republic of Singapore. UTC+8 is shared with Malaysia, Western Australia, Hong Kong, the Philippines and most of mainland China.
Pro Tips
- • IST is 2 hours 30 minutes behind SGT, all year. A round-hour Singapore meeting becomes a :30 slot in India.
- • When scheduling, double-check the half-hour offset — it is the most common source of cross-Asia calendar mistakes.
- • Neither side observes DST, so the SGT-IST offset never changes.
- • Singapore afternoon (1:30 to 5:30 PM SGT) is the cleanest overlap with Indian morning-to-afternoon business hours.
- • For Indian end-of-day calls, 7:30 to 9:30 PM SGT works well — late afternoon for your counterparts.
- • Use IANA identifier Asia/Kolkata in calendars — IST does not observe DST so the offset is locked.