CRN0

AST to BRT cron converter

BRT is currently 1 hour ahead of AST. Convert BRT to AST

UTC-4
UTC-3
0 10 * * *

At 10:00 every day in São Paulo.

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

HalifaxSão Paulo

Examples

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

Questions

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

BRT is currently 1 hour ahead of AST. Add 1 hour 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 AST) becomes 0 10 * * 1-5 in BRT.

What is the time difference between AST and BRT?

Atlantic Time is UTC-4 / UTC-3 and Brasília Time is UTC-3. Right now bRT is currently 1 hour ahead of AST.

Does daylight saving time affect AST to BRT cron conversion?

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

What is midnight AST in BRT cron?

Midnight in AST (0 0 * * *) is 0 1 * * * in BRT.

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