CRN0

SAST to AST cron converter

AST is currently 6 hours behind SAST. Convert AST to SAST

UTC+2
UTC-4
0 3 * * *

At 03:00 every day in Halifax.

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

JohannesburgHalifax

Examples

SASTAST
0 9 * * *
0 3 * * *
0 9 * * 1-5
0 3 * * 1-5
*/15 * * * *
*/15 * * * *
0 0 * * *
0 18 * * *
30 2 * * 0
30 20 * * 6
0 0 1 * *
0 18 31 * *
0 */6 * * *
0 */6 * * *
0 17 * * 5
0 11 * * 5
Every hour of the day
0 0 * * *0 18 * * *day before
0 1 * * *0 19 * * *day before
0 2 * * *0 20 * * *day before
0 3 * * *0 21 * * *day before
0 4 * * *0 22 * * *day before
0 5 * * *0 23 * * *day before
0 6 * * *0 0 * * *
0 7 * * *0 1 * * *
0 8 * * *0 2 * * *
0 9 * * *0 3 * * *
0 10 * * *0 4 * * *
0 11 * * *0 5 * * *
0 12 * * *0 6 * * *
0 13 * * *0 7 * * *
0 14 * * *0 8 * * *
0 15 * * *0 9 * * *
0 16 * * *0 10 * * *
0 17 * * *0 11 * * *
0 18 * * *0 12 * * *
0 19 * * *0 13 * * *
0 20 * * *0 14 * * *
0 21 * * *0 15 * * *
0 22 * * *0 16 * * *
0 23 * * *0 17 * * *

Questions

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

AST is currently 6 hours behind SAST. Subtract 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 SAST) becomes 0 3 * * 1-5 in AST.

What is the time difference between SAST and AST?

South Africa Standard Time is UTC+2 and Atlantic Time is UTC-4 / UTC-3. Right now aST is currently 6 hours behind SAST.

Does daylight saving time affect SAST to AST cron conversion?

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

What is midnight SAST in AST cron?

Midnight in SAST (0 0 * * *) is 0 18 * * * in AST, on the previous day.

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