Quartz cron expressions — full reference & examples

SEC MIN HOUR DOM MONTH DOW [YEAR]
 0   0   12   ?    *    1L   *

Field        Range                Wildcards
seconds      0-59                 , - * /
minute       0-59                 , - * /
hour         0-23                 , - * /
day-of-month 1-31                 , - * / ? L W
month        1-12 or JAN-DEC      , - * /
day-of-week  1-7 or SUN-SAT       , - * / ? L #
year (opt)   1970-2099            , - * /

• ? — “no specific value”. Used in day-of-month or day-of-week (exactly one) to resolve the conflict.
• L — “last”. L in day-of-month is “last day of month”; 5L in day-of-week is “last Friday”.
• L-N — N days before the last day. L-2 in day-of-month is “2 days before the last day of the month”.
• W — nearest weekday. 15W is “weekday nearest to the 15th”.
• LW — last weekday of the month.
• # — Nth weekday of month. 2#1 is “first Monday” (Quartz day-of-week 2=Monday).

• 0 0 12 * * ? — every day at noon
• 0 15 10 ? * 6L — last Friday of every month at 10:15 (Quartz 6=Friday)
• 0 0 0 L * ? — last day of every month at midnight
• 0 0 0 LW * ? — last weekday of every month at midnight
• 0 0 9 ? * 2#1 — first Monday of every month at 09:00
• 0 0 9 ? * MON-FRI — every weekday at 09:00
• 0 0/30 * * * ? — every 30 minutes (top and bottom of the hour)
• 0 0 12 1 * ? 2026 — at noon on the 1st of every month, only in 2026

@Component
public class ReportingScheduler {

    @Scheduled(cron = "0 0 9 ? * MON-FRI", zone = "America/New_York")
    public void weekdayReport() {
        // ...
    }

    @Scheduled(cron = "0 0 0 L * ?")
    public void monthEndJob() {
        // last day of every month at midnight (UTC by default)
    }
}

• Day-of-week 1=Sunday, not 0. Off-by-one from Unix cron.
• `?` is required in either day-of-month or day-of-week (exactly one).
• JVM timezone is the default. Set the trigger's timezone explicitly for consistency across deployments.
• Misfire instructions matter for infrequent triggers. Default behaviour (fire once now) may not be what you want for monthly billing jobs.