What is the time difference between AST and NZST?

NZST is 16h 0m ahead of AST. AST is UTC-4 and NZST is UTC+12.

What is 12:00 PM AST in NZST?

12:00 PM AST is 4:00 AM (+1 day) NZST.

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

NZST is 16h 0m ahead of AST. When it's 12:00 PM AST, it's 4:00 AM (+1 day) NZST.

From

AST · UTC-4

12:09:48AM

Atlantic Standard Time

NZST · UTC+12

4:09:48PM

New Zealand Standard Time

9:00 AM AST=1:00 AM(+1 day) NZST

12:00 PM AST=4:00 AM(+1 day) NZST

5:00 PM AST=9:00 AM(+1 day) NZST

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

NZST (UTC+12) is the standard-time offset; New Zealand uses NZDT (UTC+13) in summer.

What is the time difference between AST and NZST?: NZST is 16h 0m ahead of AST. AST is UTC-4 and NZST is UTC+12.
What is 12:00 PM AST in NZST?: 12:00 PM AST is 4:00 AM (+1 day) NZST.
Does AST change for daylight saving time?: AST is a fixed offset of UTC-4 and does not itself change for daylight saving time.