Cron expression `5-59/20 * * * *` runs every 20 minutes, minutes 5 through 59 past the hour

What this cron means, field by field

Each field of 5-59/20 * * * * controls one dimension of the schedule. Hover over any value in the editor above to see its tooltip; the table below summarises the same information.

Field	Value	Means	Range / hint
minute	`5-59/20`	from minute 5 through 59/20	0-59. The minute(s) of the hour the job will fire.
hour	`*`	every value (wildcard)	0-23. The hour(s) of the day the job will fire (0 = midnight, 23 = 11 PM).
day of month	`*`	every value (wildcard)	1-31. The day(s) of the month. Use * if you want every day.
month	`*`	every value (wildcard)	1-12 or JAN-DEC. The month(s). Use * for every month.
day of week	`*`	every value (wildcard)	0-7 or SUN-SAT (0 and 7 both mean Sunday). Use * for every day of the week.

Next 5 runs

Shown in UTC. Change the timezone in the editor.

Next runs · UTC

Wed 16 Sep · 10:25in 7m
Wed 16 Sep · 10:45
Wed 16 Sep · 11:05
Wed 16 Sep · 11:25
Wed 16 Sep · 11:45

Similar cron expressions

Common variations and tweaks of 5-59/20 * * * *.

5-59/20 0 * * *Every 20 minutes, minutes 5 through 59 past the hour, between 00:00 and 00:59
5-59/20 9 * * *Every 20 minutes, minutes 5 through 59 past the hour, between 09:00 and 09:59
5-59/20 12 * * *Every 20 minutes, minutes 5 through 59 past the hour, between 12:00 and 12:59
5-59/20 * * * 1-5Every 20 minutes, minutes 5 through 59 past the hour, Monday through Friday
5-59/20 * 1 * *Every 20 minutes, minutes 5 through 59 past the hour, on day 1 of the month
5-59/20 * L * *Every 20 minutes, minutes 5 through 59 past the hour, on the last day of the month

Where else this cron could be used

The same expression 5-59/20 * * * * works in:

Standard Unix crontab (5-field syntax).
AWS EventBridge / Lambda Scheduled (with a 6th field for year, often *).
Vercel cron jobs (declared in vercel.json).
Quartz Scheduler and node-cron, robfig/cron and similar libraries.

Examples

0 18 * * *
Every day at 18:00
0 */5 * * *
Every 5 hours
0 18 * * 1-5
Weekdays at 18:00
0 0 1 * *
Once a month, on the 1st at midnight

Cheatsheet

Full cheatsheet

Field	Req.	Range	Wildcards
minute	yes	0-59	, - * /
hour	yes	0-23	, - * /
day of month	yes	1-31	, - * /
month	yes	1-12 or JAN-DEC	, - * /
day of week	yes	0-6 or names; some dialects use 0-7 or 1-7 — see Dialects	, - * /

Frequently asked questions

What does the cron expression `5-59/20 * * * *` mean?

every 20 minutes, minutes 5 through 59 past the hour, every hour, every day.

When does `5-59/20 * * * *` run next?

The next runs (UTC): 2026-09-16 10:25; 2026-09-16 10:45; 2026-09-16 11:05; 2026-09-16 11:25; 2026-09-16 11:45.

Is `5-59/20 * * * *` a valid cron expression?

Yes - CronTool's parser accepts this expression and the calendar projects future runs successfully.