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" How do you schedule a single job to run Monday through Friday at 7 pm and on the second Saturday at 1 am? That's a serious question. As far as I can see, you can only attach a single set of times of day to a single set of days. That may seem like a pathological example, but imagine a retail business that has different closing times depending on what day of the week or month it is. One either has to create a duplicate job (which means double the maintenance and the risk of forgetting something when you need..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://archive.midrange.com/midrange-l/201405/msg00858.html>