CRN0

WAT to AST cron converter

AST is currently 5 hours behind WAT. Convert AST to WAT

UTC+1
UTC-4
0 4 * * *

At 04:00 every day in Halifax.

Show timeline and next runs
Lagos
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00061218
Halifax
Each amber mark is a run time. The top strip shows Lagos 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 Lagos.

LagosHalifax

Examples

WATAST
0 9 * * *
0 4 * * *
0 9 * * 1-5
0 4 * * 1-5
*/15 * * * *
*/15 * * * *
0 0 * * *
0 19 * * *
30 2 * * 0
30 21 * * 6
0 0 1 * *
0 19 31 * *
0 */6 * * *
0 1-23/6 * * *
0 17 * * 5
0 12 * * 5
Every hour of the day
0 0 * * *0 19 * * *day before
0 1 * * *0 20 * * *day before
0 2 * * *0 21 * * *day before
0 3 * * *0 22 * * *day before
0 4 * * *0 23 * * *day before
0 5 * * *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 * * *

Questions

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

AST is currently 5 hours behind WAT. Subtract 5 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 WAT) becomes 0 4 * * 1-5 in AST.

What is the time difference between WAT and AST?

West Africa Time is UTC+1 and Atlantic Time is UTC-4 / UTC-3. Right now aST is currently 5 hours behind WAT.

Does daylight saving time affect WAT to AST cron conversion?

AST observes daylight saving time, so the difference between WAT (UTC+1) and AST (UTC-4 / UTC-3) changes during the year. Re-check your converted cron after each DST change.

What is midnight WAT in AST cron?

Midnight in WAT (0 0 * * *) is 0 19 * * * in AST, on the previous day.

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