Cron schedules are compact but cryptic. Paste one to read it in plain English and see when it will run next.
Cron fields
Five fields, in order: minute (0–59), hour (0–23), day of month (1–31), month (1–12), day of week (0–6, Sunday = 0). Use * for “every”, */n for “every n”, a-b for ranges and commas for lists.
Questions
Does it support seconds?
Six- and seven-field expressions are explained, but next run times are only listed for standard five-field cron.