IST to AST Time Converter
Use this IST to AST time converter to compare India and Canada time instantly. AST is 9 hours and 30 minutes behind IST, so 9:00 AM IST becomes 11:30 PM (previous day) AST and 5:00 PM IST becomes 7:30 AM AST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.
IST to AST Quick Facts
Use this IST to AST converter to compare India and Canada time, check the 9 hours and 30 minutes gap, and confirm the right slot for calls, handoffs, and deadlines. Find the best overlap for calls and meetings.
How to Convert IST to AST
Converting between India Standard Time and Atlantic Standard Time means accounting for a 9 hours and 30 minutes gap — here's how to do it in under 10 seconds with no sign-up.
Pick the date and time in India Standard Time (UTC +5:30) that you want to convert. Hit "Now" to load the current IST time instantly, or use "+1h" to step forward and compare.
The equivalent Atlantic Standard Time (UTC -4) time appears immediately. Since AST is 9 hours and 30 minutes behind of IST, most daytime conversions stay on the same calendar day.
Click "Copy Time" to grab the AST result for your calendar or message. Use "+1d" to check how the conversion shifts across dates — useful when Daylight Saving Time changes the gap.
Why Choose Our IST to AST Converter
With 9 hours and 30 minutes between IST and AST, business-hours overlap is limited. This tool instantly shows which hours work on both sides, so you can lock in a meeting without a chain of "does 3 PM work for you?" emails.
Late-night IST times can land on a different date in AST because of the 9 hours and 30 minutes offset. The converter labels "next day" or "previous day" next to the result so you never send a message a day early or miss a deadline.
The half-hour offset between IST (UTC +5:30) and AST (UTC -4) already makes mental math tricky — add Daylight Saving Time and the gap can shift further. This converter uses live UTC offsets, so you're always accurate.
Product launches, sports matches, and webinars are often announced in IST. Convert the event time to AST so you know exactly when to tune in — with a 9 hours and 30 minutes difference, a morning event in India hits the evening in Canada.
IST to AST Time Conversion Chart
Quick-reference conversion table covering every hour of the day at a glance.
India Standard Time to Atlantic Standard Time full day schedule
| India Standard Time | Atlantic Standard Time |
|---|---|
| 12:00 AM |
2:30 PM
(previous day)
|
| 1:00 AM |
3:30 PM
(previous day)
|
| 2:00 AM |
4:30 PM
(previous day)
|
| 3:00 AM |
5:30 PM
(previous day)
|
| 4:00 AM |
6:30 PM
(previous day)
|
| 5:00 AM |
7:30 PM
(previous day)
|
| 6:00 AM |
8:30 PM
(previous day)
|
| 7:00 AM |
9:30 PM
(previous day)
|
| 8:00 AM |
10:30 PM
(previous day)
|
| 9:00 AM |
11:30 PM
(previous day)
|
| 10:00 AM |
12:30 AM
|
| 11:00 AM |
1:30 AM
|
| 12:00 PM |
2:30 AM
|
| 1:00 PM |
3:30 AM
|
| 2:00 PM |
4:30 AM
|
| 3:00 PM |
5:30 AM
|
| 4:00 PM |
6:30 AM
|
| 5:00 PM |
7:30 AM
|
| 6:00 PM |
8:30 AM
|
| 7:00 PM |
9:30 AM
|
| 8:00 PM |
10:30 AM
|
| 9:00 PM |
11:30 AM
|
| 10:00 PM |
12:30 PM
|
| 11:00 PM |
1:30 PM
|
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Find the time difference from any major zone into Atlantic Standard Time. Use these pages when scheduling with Canada from a different region.