AST to IRST Time Converter
Convert time from AST to IRST. Enter any time to see the equivalent IRST time, compare current AST and IRST times side by side, and find overlapping business hours for calls and meetings.
ast to irst Quick Facts
Use this AST to IRST converter to compare Canada and Iran time, check the 7 hours and 30 minutes gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 9:00 AM AST / 4:30 PM IRST.
How to Convert ast to irst
Converting between Atlantic Standard Time and Iran Standard Time means accounting for a 7 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 Atlantic Standard Time (UTC -4) that you want to convert. Hit "Now" to load the current ast time instantly, or use "+1h" to step forward and compare.
The equivalent Iran Standard Time (UTC +3:30) time appears immediately. Since irst is 7 hours and 30 minutes ahead of ast, most daytime conversions stay on the same calendar day.
Click "Copy Time" to grab the irst 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 ast to irst Converter
When someone in Canada suggests 9:00 AM ast, that's 4:30 PM irst. This converter shows the overlap so both sides agree on one slot — no back-and-forth.
Late-night ast times can land on a different date in irst because of the 7 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 ast (UTC -4) and irst (UTC +3:30) 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 ast. Convert the event time to irst so you know exactly when to tune in — with a 7 hours and 30 minutes difference, a morning event in Canada falls during work hours in Iran.
ast to irst Time Conversion Chart
Quick-reference conversion table covering every hour of the day at a glance.
Atlantic Standard Time to Iran Standard Time full day schedule
| Atlantic Standard Time | Iran Standard Time |
|---|---|
| 12:00 AM |
7:30 AM
|
| 1:00 AM |
8:30 AM
|
| 2:00 AM |
9:30 AM
|
| 3:00 AM |
10:30 AM
|
| 4:00 AM |
11:30 AM
|
| 5:00 AM |
12:30 PM
|
| 6:00 AM |
1:30 PM
|
| 7:00 AM |
2:30 PM
|
| 8:00 AM |
3:30 PM
|
| 9:00 AM |
4:30 PM
|
| 10:00 AM |
5:30 PM
|
| 11:00 AM |
6:30 PM
|
| 12:00 PM |
7:30 PM
|
| 1:00 PM |
8:30 PM
|
| 2:00 PM |
9:30 PM
|
| 3:00 PM |
10:30 PM
|
| 4:00 PM |
11:30 PM
|
| 5:00 PM |
12:30 AM
(next day)
|
| 6:00 PM |
1:30 AM
(next day)
|
| 7:00 PM |
2:30 AM
(next day)
|
| 8:00 PM |
3:30 AM
(next day)
|
| 9:00 PM |
4:30 AM
(next day)
|
| 10:00 PM |
5:30 AM
(next day)
|
| 11:00 PM |
6:30 AM
(next day)
|
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