CRN0

AST to SAST cron converter

SAST is currently 6 hours ahead of AST. Convert SAST to AST

UTC-4
UTC+2
0 15 * * *

At 15:00 every day in Johannesburg.

Show timeline and next runs
Halifax
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00061218
Johannesburg
Each amber mark is a run time. The top strip shows Halifax local time and the bottom strip shows Johannesburg 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.

HalifaxJohannesburg

Examples

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

Questions

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

SAST is currently 6 hours ahead of AST. Add 6 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 15 * * 1-5 in SAST.

What is the time difference between AST and SAST?

Atlantic Time is UTC-4 / UTC-3 and South Africa Standard Time is UTC+2. Right now sAST is currently 6 hours ahead of AST.

Does daylight saving time affect AST to SAST cron conversion?

AST observes daylight saving time, so the difference between AST (UTC-4 / UTC-3) and SAST (UTC+2) changes during the year. Re-check your converted cron after each DST change.

What is midnight AST in SAST cron?

Midnight in AST (0 0 * * *) is 0 6 * * * in SAST.

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