AST to IST Converter

Convert between Atlantic Standard Time (AST) and Irish Standard Time (IST). Click on the time field to change time.



AST* / ADT
*AST changed to ADT which is in use now


  1. Click on the AST field (left) and select the time you want to convert to IST.
  2. The time in IST (right) will be updated automatically.
  3. You can also change the date by clicking on the date field.

What time is now in IST zone?

The current time in IST is May 12th 2025, 8:01:58 pm

What time is now in AST zone?

The current time in AST is May 12th 2025, 4:01:58 pm

What is the difference between AST and IST time zones?

The Atlantic Standard Time (AST) is 4 hours behind of Irish Standard Time (IST).

AST to IST meeting planner

Once you convert AST to IST, click on the "Copy Link" button to share this time with a friend or a colleague. It is a simple tool to plan meetings across two different time zones.

Why should you trust our online time converter?

We use the IANA time zone database for calculating our time zone conversions. IANA is a well-known reputable source that coordinates and manages world timezone data.


Most other sites use a static offset to convert between time zones. However, this method is prone to errors due to geopolitical events and daylight savings time changes. That is why we regularly update our time zone database so that you can be confident our time information is 100% accurate.


AST to IST Chart

AST Time IST Time
12:00 am AST (midnight) 04:00 am IST
01:00 am AST 05:00 am IST
02:00 am AST 06:00 am IST
03:00 am AST 07:00 am IST
04:00 am AST 08:00 am IST
05:00 am AST 09:00 am IST
06:00 am AST 10:00 am IST
07:00 am AST 11:00 am IST
08:00 am AST 12:00 pm IST (noon)
09:00 am AST 01:00 pm IST
10:00 am AST 02:00 pm IST
11:00 am AST 03:00 pm IST
12:00 pm AST (noon) 04:00 pm IST
01:00 pm AST 05:00 pm IST
02:00 pm AST 06:00 pm IST
03:00 pm AST 07:00 pm IST
04:00 pm AST 08:00 pm IST
05:00 pm AST 09:00 pm IST
06:00 pm AST 10:00 pm IST
07:00 pm AST 11:00 pm IST
08:00 pm AST 12:00 am IST (midnight)
09:00 pm AST 01:00 am IST
10:00 pm AST 02:00 am IST
11:00 pm AST 03:00 am IST


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