CRN0

KST to UTC cron converter

UTC is currently 9 hours behind KST. Convert UTC to KST

UTC+9
UTC+0
0 0 * * *

At 00:00 every day in UTC.

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

SeoulUTC

Examples

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

Questions

How do I convert a cron expression from KST to UTC?

UTC is currently 9 hours behind KST. Subtract 9 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 KST) becomes 0 0 * * 1-5 in UTC.

What is the time difference between KST and UTC?

Korea Standard Time is UTC+9 and Coordinated Universal Time is UTC+0. Right now uTC is currently 9 hours behind KST.

Does daylight saving time affect KST to UTC cron conversion?

Neither KST nor UTC observes daylight saving time, so the 9 hours difference stays the same all year.

What is midnight KST in UTC cron?

Midnight in KST (0 0 * * *) is 0 15 * * * in UTC, on the previous day.

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