CRN0

KST to GMT cron converter

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

UTC+9
UTC+0
0 0 * * *

At 00:00 every day in London.

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

SeoulLondon

Examples

KSTGMT
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 GMT?

GMT 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 GMT.

What is the time difference between KST and GMT?

Korea Standard Time is UTC+9 and Greenwich Mean Time (UK) is UTC+0 / UTC+1. Right now gMT is currently 9 hours behind KST.

Does daylight saving time affect KST to GMT cron conversion?

GMT observes daylight saving time, so the difference between KST (UTC+9) and GMT (UTC+0 / UTC+1) changes during the year. Re-check your converted cron after each DST change.

What is midnight KST in GMT cron?

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

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