CALIFORNIA FAMILY LAW
...Spousal Support
......Date Payments Due/Orders Effective
4 Cards On This Topic:

If no date specified in order, support due last day of month.

Alimony payable in full on date due; no proration permitted if W remarries later that month.

Support payments vest in full on date due; no proration allowed.

Support orders become operative at moment of pronouncement, not date formal order is signed.