What is the time difference between AST and IST?

IST is 9h 30m ahead of AST. AST is UTC-4 and IST is UTC+5:30.

Does AST change for daylight saving time?

AST is a fixed offset of UTC-4 and does not itself change for daylight saving time.

IST is 9h 30m ahead of AST. When it's 12:00 PM AST, it's 9:30 PM IST.

From

AST · UTC-4

12:09:48AM

Atlantic Standard Time

IST · UTC+5:30

9:39:48AM

India Standard Time

9:00 AM AST=6:30 PM IST

12:00 PM AST=9:30 PM IST

5:00 PM AST=2:30 AM(+1 day) IST

Shaded rows are within standard working hours (8am–6pm) on both sides.

IST here is India Standard Time (UTC+5:30). It can also mean Irish Standard Time or Israel Standard Time.

What is the time difference between AST and IST?: IST is 9h 30m ahead of AST. AST is UTC-4 and IST is UTC+5:30.
What is 12:00 PM AST in IST?: 12:00 PM AST is 9:30 PM IST.
Does AST change for daylight saving time?: AST is a fixed offset of UTC-4 and does not itself change for daylight saving time.