CRN0

AST to IST cron converter

IST is currently 9 hours 30 minutes ahead of AST. Convert IST to AST

UTC-4
UTC+5:30
30 18 * * *

At 18:30 every day in Mumbai.

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

HalifaxMumbai

Examples

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

Questions

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

IST is currently 9 hours 30 minutes ahead of AST. Add 9 hours 30 minutes to the hour and minute field, and shift the day-of-week if the time crosses midnight. For example, 0 9 * * 1-5 (weekdays at 09:00 AST) becomes 30 18 * * 1-5 in IST.

What is the time difference between AST and IST?

Atlantic Time is UTC-4 / UTC-3 and India Standard Time is UTC+5:30. Right now iST is currently 9 hours 30 minutes ahead of AST.

Does daylight saving time affect AST to IST cron conversion?

AST observes daylight saving time, so the difference between AST (UTC-4 / UTC-3) and IST (UTC+5:30) changes during the year. Re-check your converted cron after each DST change.

What is midnight AST in IST cron?

Midnight in AST (0 0 * * *) is 30 9 * * * in IST.

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