CRN0

PHT to AST cron converter

AST is currently 12 hours behind PHT. Convert AST to PHT

UTC+8
UTC-4
0 21 * * *

At 21:00 every day in Halifax.

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

ManilaHalifax

Examples

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

Questions

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

AST is currently 12 hours behind PHT. Subtract 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 PHT) becomes 0 21 * * 0-4 in AST.

What is the time difference between PHT and AST?

Philippine Time is UTC+8 and Atlantic Time is UTC-4 / UTC-3. Right now aST is currently 12 hours behind PHT.

Does daylight saving time affect PHT to AST cron conversion?

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

What is midnight PHT in AST cron?

Midnight in PHT (0 0 * * *) is 0 12 * * * in AST, on the previous day.

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