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Convert IRST to AST Time - Free Time Zone Converter

Convert Iran Standard Time (IRST) to Atlantic Standard Time (AST, UTC-4) with our free time zone converter. Features real-time conversion and meeting planner for time zone conversion. Accurate, fast, and easy to use on all devices.

🌍
IRST
Iran Standard Time
Current Time
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🕐
AST
Atlantic Standard Time
Current Time
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Converted Time
Select a time to convert
Time Difference
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Your Local Time
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UTC Time
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IRST to AST Time Zone Difference

Atlantic Standard Time is 7 hours and 30 minutes behind Iran Standard Time

Always up-to-date and accurate

24-Hour IRST to AST Conversion Chart

Complete hourly conversion for Iran Standard Time to Atlantic Standard Time

12:00 AM
IRST
4:30 PM
AST
(previous day)
00:00 16:30
1:00 AM
IRST
5:30 PM
AST
(previous day)
01:00 17:30
2:00 AM
IRST
6:30 PM
AST
(previous day)
02:00 18:30
3:00 AM
IRST
7:30 PM
AST
(previous day)
03:00 19:30
4:00 AM
IRST
8:30 PM
AST
(previous day)
04:00 20:30
5:00 AM
IRST
9:30 PM
AST
(previous day)
05:00 21:30
6:00 AM
IRST
10:30 PM
AST
(previous day)
06:00 22:30
7:00 AM
IRST
11:30 PM
AST
(previous day)
07:00 23:30
8:00 AM
IRST
12:30 AM
AST
08:00 00:30
9:00 AM
IRST
1:30 AM
AST
09:00 01:30
10:00 AM
IRST
2:30 AM
AST
10:00 02:30
11:00 AM
IRST
3:30 AM
AST
11:00 03:30
12:00 PM
IRST
4:30 AM
AST
12:00 04:30
1:00 PM
IRST
5:30 AM
AST
13:00 05:30
2:00 PM
IRST
6:30 AM
AST
14:00 06:30
3:00 PM
IRST
7:30 AM
AST
15:00 07:30
4:00 PM
IRST
8:30 AM
AST
16:00 08:30
5:00 PM
IRST
9:30 AM
AST
17:00 09:30
6:00 PM
IRST
10:30 AM
AST
18:00 10:30
7:00 PM
IRST
11:30 AM
AST
19:00 11:30
8:00 PM
IRST
12:30 PM
AST
20:00 12:30
9:00 PM
IRST
1:30 PM
AST
21:00 13:30
10:00 PM
IRST
2:30 PM
AST
22:00 14:30
11:00 PM
IRST
3:30 PM
AST
23:00 15:30

Best Meeting Times between Iran Standard Time and Atlantic Standard Time

Optimal hours for calls between IRST and AST

Business hours overlap available
5:00 PM IRST → 9:30 AM AST
Business Hours
6:00 PM IRST → 10:30 AM AST
Business Hours

Based on standard business hours (9:00 AM - 6:00 PM) in each time zone

Time Zone Details

Technical information for both time zones

IRST

Iran Standard Time

Source timezone

UTC Offset 3.5 hours
Abbreviation IRST
Type Standard Time
Status Active
AST

Atlantic Standard Time

Target timezone

UTC Offset -4.0 hours
Abbreviation AST
Type Standard Time
Status Active

Most Searched IRST to AST Times

Popular business hours conversion from Iran Standard Time to Atlantic Standard Time

7:00 AM
11:30 PM (previous day)
Early business hours
Popular
8:00 AM
12:30 AM
Prime meeting time
9:00 AM
1:30 AM
Mid-morning calls
11:00 AM
3:30 AM
Lunch meetings
12:00 PM
4:30 AM
Afternoon coordination
1:00 PM
5:30 AM
Late afternoon calls

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