I need a cron expression for fire event at 8,18,28 of every month. I put into bean
<bean id="scartiJobTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
<property name="jobDetail" ref="scartiJobLauncher"/>
<property name="cronExpression" value="??????????????????????"/>
</bean>
0 0 12 8,18,28 * ? fires at 12 PM for every month of specified days. You can find detailed information here quartz cron expresssion