Nine in the morning, Monday through Friday. The weekend is left out.

How do ? and * differ?

Unix has no ?. On Quartz and AWS, ? means that field is unset, and one of day or weekday has to be unset in some environments.

Which clock are the next times on?

The wall clock of the chosen zone. AWS shows that time and UTC together.

Home Cron expression

Switching Unix, Quartz, or AWS rewrites the expression for that environment.

Environment Time zone Expression

Meaning

A server schedule is five numbers, and it is not obvious which field is the minute, hour, day, month, or weekday.

This screen says the expression in words and lists up to five coming runs in the chosen zone. The expression stays here.

01How to use it

Type an expression or press an example. Changing the environment rewrites the expression when that is possible.

Pick a zone and the next runs use that local time. AWS also shows UTC.
02What you get

0 9 * * 1-5 is weekdays at 9 in the morning.

*/10 * * * * runs every 10 minutes.

Entered0 9 * * 1-5

Unix weekdays at 9 AM
03Worth knowing

On Unix, weekday 7 is Sunday. On Quartz and AWS, Sunday is 1.

@reboot runs once at boot, so the next time is not calculated. AWS requires ? in either the day or the weekday.

Unix	weekdays at 9 AM

QWhen is 0 9 * * 1-5?: ANine in the morning, Monday through Friday. The weekend is left out.
QHow do ? and * differ?: AUnix has no ?. On Quartz and AWS, ? means that field is unset, and one of day or weekday has to be unset in some environments.
QWhich clock are the next times on?: AThe wall clock of the chosen zone. AWS shows that time and UTC together.