CRN0

JST to AKST cron converter

AKST is currently 18 hours behind JST. Convert AKST to JST

UTC+9
UTC-9
0 15 * * *

At 15:00 every day in Anchorage.

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

TokyoAnchorage

Examples

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

Questions

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

AKST is currently 18 hours behind JST. Subtract 18 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 JST) becomes 0 15 * * 0-4 in AKST.

What is the time difference between JST and AKST?

Japan Standard Time is UTC+9 and Alaska Time is UTC-9 / UTC-8. Right now aKST is currently 18 hours behind JST.

Does daylight saving time affect JST to AKST cron conversion?

AKST observes daylight saving time, so the difference between JST (UTC+9) and AKST (UTC-9 / UTC-8) changes during the year. Re-check your converted cron after each DST change.

What is midnight JST in AKST cron?

Midnight in JST (0 0 * * *) is 0 6 * * * in AKST, on the previous day.

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