CRN0

BRT to JST cron converter

JST is currently 12 hours ahead of BRT. Convert JST to BRT

UTC-3
UTC+9
0 21 * * *

At 21:00 every day in Tokyo.

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

São PauloTokyo

Examples

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

Questions

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

JST is currently 12 hours ahead of BRT. Add 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 BRT) becomes 0 21 * * 1-5 in JST.

What is the time difference between BRT and JST?

Brasília Time is UTC-3 and Japan Standard Time is UTC+9. Right now jST is currently 12 hours ahead of BRT.

Does daylight saving time affect BRT to JST cron conversion?

Neither BRT nor JST observes daylight saving time, so the 12 hours difference stays the same all year.

What is midnight BRT in JST cron?

Midnight in BRT (0 0 * * *) is 0 12 * * * in JST.

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