CRN0

GST to AST cron converter

AST is currently 8 hours behind GST. Convert AST to GST

UTC+4
UTC-4
0 1 * * *

At 01:00 every day in Halifax.

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

DubaiHalifax

Examples

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

Questions

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

AST is currently 8 hours behind GST. Subtract 8 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 GST) becomes 0 1 * * 1-5 in AST.

What is the time difference between GST and AST?

Gulf Standard Time is UTC+4 and Atlantic Time is UTC-4 / UTC-3. Right now aST is currently 8 hours behind GST.

Does daylight saving time affect GST to AST cron conversion?

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

What is midnight GST in AST cron?

Midnight in GST (0 0 * * *) is 0 16 * * * in AST, on the previous day.

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