Explain cron expressions and preview upcoming runs.
Standard 5-field crontab syntax: minute, hour, day of month, month, day of week.
Supports *, lists (1,15), ranges (1-5), steps (*/10), month/day names, and presets like @daily.
One expression per box. Shows the next runs of all of them together and where two or more fire in the same minute over the next 7 days.
Enter two or more cron expressions to compare their schedules.