Linux
Cron to systemd Timer Converter
Paste a cron expression and get the equivalent systemd OnCalendar= line - fixed times, minute steps, and day-of-week patterns.
Cron expression
OnCalendar=Mon..Fri *-*-* 09:00:00
Covers fixed times, minute steps, and day-of-week ranges/lists - not the full cron grammar (month fields, day-of-month).
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