Hey Friends, Today am gonna explain you the time format used by JBPM Schuduler. Those who don’t know what JBPM is, its basically a Open Source workflow engine used to execute Business Process. For more details read here : JBPM Wikipedia After lots and lots of googling i got the timer info, hence i am sharing the same below : JBPM SCHEDULER SEQUENCE : Sec Min Hour Day of the Month Month Day of the Week Year So suppose, you wanted to trigger process by : Example 1 : 2 AM Sunday Daily Timer : SEC MIN HOUR [DAY OF MONTH] MONTH [DAY OF WEEK] YEAR 0 0 2 ? * SUN * Here, ? mean you don’t know the exact Day of the Month, so JBPM will automatically find it for you just need to put ? , while * is for all , here in the example it means the process should be triggered in all the Months of a year. Example 2 : 4:25 PM All days of a week Timer : 0 25 16 * * ? Lets increase the complexity, suppose you wanted to execute a script every 2 hours ...