CRN0

AST to AWST cron converter

AWST is currently 12 hours ahead of AST. Convert AWST to AST

UTC-4
UTC+8
0 21 * * *

At 21:00 every day in Perth.

Show timeline and next runs
Halifax
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Perth
Each amber mark is a run time. The top strip shows Halifax local time and the bottom strip shows Perth local time, lined up so the same moment sits on the same vertical line. Shaded areas are night hours.

Same moment as “at 09:00 every day” in Halifax.

HalifaxPerth

Examples

ASTAWST
0 9 * * *
0 21 * * *
0 9 * * 1-5
0 21 * * 1-5
*/15 * * * *
*/15 * * * *
0 0 * * *
0 12 * * *
30 2 * * 0
30 14 * * 0
0 0 1 * *
0 12 1 * *
0 */6 * * *
0 */6 * * *
0 17 * * 5
0 5 * * 6
Every hour of the day
0 0 * * *0 12 * * *
0 1 * * *0 13 * * *
0 2 * * *0 14 * * *
0 3 * * *0 15 * * *
0 4 * * *0 16 * * *
0 5 * * *0 17 * * *
0 6 * * *0 18 * * *
0 7 * * *0 19 * * *
0 8 * * *0 20 * * *
0 9 * * *0 21 * * *
0 10 * * *0 22 * * *
0 11 * * *0 23 * * *
0 12 * * *0 0 * * *next day
0 13 * * *0 1 * * *next day
0 14 * * *0 2 * * *next day
0 15 * * *0 3 * * *next day
0 16 * * *0 4 * * *next day
0 17 * * *0 5 * * *next day
0 18 * * *0 6 * * *next day
0 19 * * *0 7 * * *next day
0 20 * * *0 8 * * *next day
0 21 * * *0 9 * * *next day
0 22 * * *0 10 * * *next day
0 23 * * *0 11 * * *next day

Questions

How do I convert a cron expression from AST to AWST?

AWST is currently 12 hours ahead of AST. Add 12 hours to the hour field, and shift the day-of-week if the time crosses midnight. For example, 0 9 * * 1-5 (weekdays at 09:00 AST) becomes 0 21 * * 1-5 in AWST.

What is the time difference between AST and AWST?

Atlantic Time is UTC-4 / UTC-3 and Australian Western Time is UTC+8. Right now aWST is currently 12 hours ahead of AST.

Does daylight saving time affect AST to AWST cron conversion?

AST observes daylight saving time, so the difference between AST (UTC-4 / UTC-3) and AWST (UTC+8) changes during the year. Re-check your converted cron after each DST change.

What is midnight AST in AWST cron?

Midnight in AST (0 0 * * *) is 0 12 * * * in AWST.

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