Translate cron expressions into human-readable schedules.
A cron expression is a string comprising five or six fields separated by white space that represents a set of times, normally as a schedule to execute some routine. It is most commonly used in Unix-like operating systems for job scheduling.
* * * * * | | | | | | | | | └── Day of Week (0-6) (Sunday=0 or 7) | | | └──── Month (1-12) | | └────── Day of Month (1-31) | └──────── Hour (0-23) └────────── Minute (0-59)
* * * * *0 0 * * *0 3 * * 1*/15 * * * *0 8 1 * *