SpringBoot_Schedule Cron Expression Meaning 0 0 * * * * Top of every hour of every day */10 * * * * * Every ten seconds 0 0 8-10 * * * 8, 9 and 10 o’clock of every day 0 0 6,19 * * * 6:00 AM and 7:00 PM every day 0 0/30 8-10 * * * 8:00, 8:30, 9:00, 9:30, 10:00 and 10:30 every day 0 0 9-17 * * MON-FRI On the hour nine-to-five weekdays 0 0 0 25 12 ? Every Christmas Day at midnight