IST to SGT Converter & Meeting Planner
Quick answer: 9:00 AM IST = 11:30 AM SGT (fixed +05:30 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Indian Standard Time (IST) and Singapore Time (SGT)? You need to account for the standard time difference. Singapore Time is normally 2.5 hours ahead of Indian Standard Time. Whether you are coordinating between teams in Mumbai and New Delhi and Singapore, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM IST = 2:30 AM SGT. The full 24-hour IST to SGT table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM IST = 5:30 PM SGT.
| IST Time | SGT Time |
|---|---|
| 12:00 AM (00:00) | 2:30 AM (02:30) |
| 1:00 AM (01:00) | 3:30 AM (03:30) |
| 2:00 AM (02:00) | 4:30 AM (04:30) |
| 3:00 AM (03:00) | 5:30 AM (05:30) |
| 4:00 AM (04:00) | 6:30 AM (06:30) |
| 5:00 AM (05:00) | 7:30 AM (07:30) |
| 6:00 AM (06:00) | 8:30 AM (08:30) |
| 7:00 AM (07:00) | 9:30 AM (09:30) |
| 8:00 AM (08:00) | 10:30 AM (10:30) |
| 9:00 AM (09:00) | 11:30 AM (11:30) |
| 10:00 AM (10:00) | 12:30 PM (12:30) |
| 11:00 AM (11:00) | 1:30 PM (13:30) |
| 12:00 PM (12:00) | 2:30 PM (14:30) |
| 1:00 PM (13:00) | 3:30 PM (15:30) |
| 2:00 PM (14:00) | 4:30 PM (16:30) |
| 3:00 PM (15:00) | 5:30 PM (17:30) |
| 4:00 PM (16:00) | 6:30 PM (18:30) |
| 5:00 PM (17:00) | 7:30 PM (19:30) |
| 6:00 PM (18:00) | 8:30 PM (20:30) |
| 7:00 PM (19:00) | 9:30 PM (21:30) |
| 8:00 PM (20:00) | 10:30 PM (22:30) |
| 9:00 PM (21:00) | 11:30 PM (23:30) |
| 10:00 PM (22:00) | 12:30 AM (00:30)+1 day |
| 11:00 PM (23:00) | 1:30 AM (01:30)+1 day |
Best time to call Singapore from Mumbai
For most work calls, compare the normal business day in Mumbai (IST) with the business day in Singapore (SGT). IST commonly covers South Asia, while SGT is mainly associated with Southeast Asia, Asia-Pacific.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
✅ The most practical overlap on 2026-07-05 is usually 9:30 AM - 3:30 PM IST, which corresponds to 12:00 PM - 6:00 PM SGT. This window sits inside the typical IST workday (9:30 AM - 6:30 PM) and the SGT workday (9:00 AM - 6:00 PM).
- DST Safety: Neither IST nor SGT uses Daylight Saving Time in our dataset, making business-hour relationships stable year-round.
- Bombay Stock Exchange (BSE): 09:15-15:30 local time in Mumbai.
- Singapore Exchange (SGX): 09:00-17:00 local time in Singapore.
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Frequently Asked Questions
What is the time difference between IST and SGT?
During standard time, Singapore Time is 2.5 hours ahead of Indian Standard Time.
Does India observe Daylight Saving Time (DST)?
India does not observe Daylight Saving Time and has not done so since 1945. IST remains fixed at UTC+5:30 every day of the year, meaning the offset between India and any DST-observing country shifts by one hour twice annually when those countries change their clocks.
Why does IST have a 30-minute offset?
India chose the 82.5° East meridian — which passes through Mirzapur in Uttar Pradesh — as its central reference longitude, as it bisects the subcontinent geographically. That meridian sits exactly 5 hours and 30 minutes ahead of the Prime Meridian in Greenwich, producing the UTC+5:30 offset that has defined IST since 1906.
Does Singapore use Daylight Saving Time?
Singapore does not observe Daylight Saving Time and has no policy to introduce it, remaining fixed at UTC+8:00 every day of the year. Singapore's location approximately one degree north of the equator means daylight hours remain nearly constant across the seasons, removing the original rationale for DST entirely.
Which other major countries share Singapore's time zone?
China, Hong Kong, Taiwan, Malaysia, and Western Australia all operate on the same UTC+8:00 offset as Singapore, though each uses its own regional designation — CST, HKT, CST, MYT, and AWST respectively. Collectively, the UTC+8 bloc represents one of the world's most economically significant time bands.