Cron Every 14 Days (Biweekly)

The cron expression 0 0 */14 * * runs at midnight on every 14th day of the month — days 1, 15, and (for 29+ day months) 29. This approximates a biweekly schedule but is based on calendar dates, not a true 14-day interval.

The result is roughly twice per month: the 1st and 15th (sometimes also the 29th). The actual gap varies from 13 to 17 days depending on the month length and whether day 29 exists. This is close enough for many practical purposes like payroll processing, biweekly reporting, and semi-monthly maintenance windows.

For a more predictable biweekly schedule, use the day-of-week field with specific weeks tracked externally. Or use 0 0 1,15 * * to explicitly run on the 1st and 15th of every month.