India Standard Time to Canada Atlantic Time
Convert times between India Standard Time (IST, UTC+5:30) and Canada Atlantic Time (AST, UTC-4:00). Canada Atlantic Time is 9.5 hours behind India Standard Time in standard time. During daylight saving time this difference changes to 8.5 hours.
UTC+5:30→UTC-4:00 / -3:00
Live timezone converterUTC Offset Reference
| Timezone | Abbreviation | Standard offset | DST offset | Country |
|---|---|---|---|---|
| India Standard Time | IST | UTC+5:30 | — | India |
| Canada Atlantic Time | AST / ADT | UTC-4:00 | UTC-3:00 | Canada |
* DST offset applies during summer months. Exact transition dates vary by year.
Standard Time Conversion (IST → AST)
| India Standard Time | Canada Atlantic Time |
|---|---|
| 12:00 AM IST | 2.5:00 PM (prev day) AST |
| 6:00 AM IST | 8.5:00 PM (prev day) AST |
| 9:00 AM IST | 11.5:00 PM (prev day) AST |
| 12:00 PM IST | 2.5:00 AM AST |
| 3:00 PM IST | 5.5:00 AM AST |
| 6:00 PM IST | 8.5:00 AM AST |
| 9:00 PM IST | 11.5:00 AM AST |
Summer (DST) Conversion (IST → ADT)
| India Standard Time (summer) | Canada Atlantic Time (summer) |
|---|---|
| 12:00 AM IST | 3.5:00 PM (prev day) ADT |
| 6:00 AM IST | 9.5:00 PM (prev day) ADT |
| 9:00 AM IST | 0.5:00 AM ADT |
| 12:00 PM IST | 3.5:00 AM ADT |
| 3:00 PM IST | 6.5:00 AM ADT |
| 6:00 PM IST | 9.5:00 AM ADT |
| 9:00 PM IST | 0.5:00 PM ADT |
Daylight Saving Time (DST) Notes
- Canada Atlantic Time observes DST. Clocks advance 1 hour to ADT (UTC-3:00) roughly from month 3 to 11.
- The offset difference shifts between 9.5h (standard) and 8.5h (DST season). Always verify the current offset using the live converter below.
Frequently Asked Questions
How do I convert IST to AST?
Add (-9.5) hours to the IST time to get AST. For example, 9:00 AM IST = 11.5:00 PM AST.
What is the current UTC offset for India Standard Time?
India Standard Time is always UTC+5:30 (IST) — it does not observe DST.
Is Canada Atlantic Time ahead or behind India Standard Time?
Canada Atlantic Time is 9.5 hours behind India Standard Time in standard time.
When is a good time to schedule a meeting between IST and AST?
Due to the 9.5-hour difference, business-hours overlap may be limited. Use the live timezone converter to find a mutually convenient time.
Related Timezone Conversions
India Standard Time → US Eastern TimeIST / ESTIndia Standard Time → US Central TimeIST / CSTIndia Standard Time → US Mountain TimeIST / MSTIndia Standard Time → US Pacific TimeIST / PSTIndia Standard Time → US Alaska TimeIST / AKSTIndia Standard Time → Hawaii TimeIST / HSTIndia Standard Time → Pakistan Standard TimeIST / PKTIndia Standard Time → Bangladesh Standard TimeIST / BST
Need the exact current time?
Use the live ToolsHub timezone converter to see current times, DST status, and schedule across time zones.