What is the time difference between AST and HST?

HST is 6h 0m behind AST. AST is UTC-4 and HST is UTC-10.

Does AST change for daylight saving time?

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

HST is 6h 0m behind AST. When it's 12:00 PM AST, it's 6:00 AM HST.

From

AST · UTC-4

12:09:47AM

Atlantic Standard Time

HST · UTC-10

6:09:47PM

Hawaii Standard Time

9:00 AM AST=3:00 AM HST

12:00 PM AST=6:00 AM HST

5:00 PM AST=11:00 AM HST

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

Hawaii does not observe daylight saving time, so HST (UTC−10) applies year-round.

What is the time difference between AST and HST?: HST is 6h 0m behind AST. AST is UTC-4 and HST is UTC-10.
What is 12:00 PM AST in HST?: 12:00 PM AST is 6:00 AM HST.
Does AST change for daylight saving time?: AST is a fixed offset of UTC-4 and does not itself change for daylight saving time.