In some uses of the CRON format there is also a seconds field at the beginning of the pattern. In that case, the CRON expression is a string comprising 6 or 7 f

In some uses of the CRON format there is also a seconds field at the beginning of the pattern. In that case, the CRON expression is a string comprising 6 or 7 fields. http://en.wikipedia.org/wiki/Cron#Format http://en.wikipedia.org/wiki/Cron#Format