Cron Expression Explainer

Standard five-field crontab syntax with wildcards, ranges, lists and steps, plus month and weekday names such as JAN or MON-FRI. The @daily, @hourly, @weekly, @monthly and @yearly macros are expanded too.

Both do. Cron accepts either value for Sunday, and the explainer collapses 7 to 0 before matching.

When day-of-month and day-of-week are both restricted, cron fires if either one matches. That expression runs on the 13th of every month and on every Friday, not only on Friday the 13th.

Your browser's local zone. Servers usually run cron in their own zone, often UTC, so check the server setting before relying on the times.

The search covers about four years of dates. Expressions that can never match, such as February 30, are reported instead of hanging the page.