Cron for Every 2 Weeks

Standard cron syntax has no field for "every other week" — the day-of-week field can't count occurrences, only match specific weekdays. The most common workaround is to run on the 1st and 15th of every month instead, which lands roughly every two weeks without drifting across months the way a strict "every 14 days" counter would eventually do relative to month boundaries. That's the expression above: 0 9 1,15 * *.

If you need a true, exact 14-day cadence regardless of the calendar, the reliable approach is to run the job weekly and have the script itself check the ISO week number and skip every other run — see the Week Number Calculator for how ISO week numbers are calculated, since checking whether that number is even or odd is the usual trick.

Want to build a different schedule, or check how a related expression behaves? Open this exact expression in the full Cron Expression Builder to edit it directly.