CRN0

AST to HKT cron converter

HKT is currently 12 hours ahead of AST. Convert HKT to AST

UTC-4
UTC+8
0 21 * * *

At 21:00 every day in Hong Kong.

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

HalifaxHong Kong

Examples

ASTHKT
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 AST to HKT?

HKT is currently 12 hours ahead of AST. 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 AST) becomes 0 21 * * 1-5 in HKT.

What is the time difference between AST and HKT?

Atlantic Time is UTC-4 / UTC-3 and Hong Kong Time is UTC+8. Right now hKT is currently 12 hours ahead of AST.

Does daylight saving time affect AST to HKT cron conversion?

AST observes daylight saving time, so the difference between AST (UTC-4 / UTC-3) and HKT (UTC+8) changes during the year. Re-check your converted cron after each DST change.

What is midnight AST in HKT cron?

Midnight in AST (0 0 * * *) is 0 12 * * * in HKT.

Related