CRN0

UTC to KST cron converter

KST is currently 9 hours ahead of UTC. Convert KST to UTC

UTC+0
UTC+9
0 18 * * *

At 18:00 every day in Seoul.

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

UTCSeoul

Examples

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

Questions

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

KST is currently 9 hours ahead of UTC. Add 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 UTC) becomes 0 18 * * 1-5 in KST.

What is the time difference between UTC and KST?

Coordinated Universal Time is UTC+0 and Korea Standard Time is UTC+9. Right now kST is currently 9 hours ahead of UTC.

Does daylight saving time affect UTC to KST cron conversion?

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

What is midnight UTC in KST cron?

Midnight in UTC (0 0 * * *) is 0 9 * * * in KST.

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