What is the time difference between AST and GST?

GST is 8h 0m ahead of AST. AST is UTC-4 and GST is UTC+4.

Does AST change for daylight saving time?

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

GST is 8h 0m ahead of AST. When it's 12:00 PM AST, it's 8:00 PM GST.

From

AST · UTC-4

12:09:48AM

Atlantic Standard Time

GST · UTC+4

8:09:48AM

Gulf Standard Time

9:00 AM AST=5:00 PM GST

12:00 PM AST=8:00 PM GST

5:00 PM AST=1:00 AM(+1 day) GST

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

What is the time difference between AST and GST?: GST is 8h 0m ahead of AST. AST is UTC-4 and GST is UTC+4.
What is 12:00 PM AST in GST?: 12:00 PM AST is 8:00 PM GST.
Does AST change for daylight saving time?: AST is a fixed offset of UTC-4 and does not itself change for daylight saving time.