Cron Expression
Not sure the expression is right? Seeing exactly when it will fire next is the clearest check.
What the five parts mean
minute (0-59) hour (0-23) day (1-31) month (1-12) weekday (0-7; both 0 and 7 are Sunday). Does not support @daily macros like these and second-level fields (that's Quartz's six-field format).