Is the duration of permanent maintenance determined from the date of filing or date of divorce?

Is the length of permanent durational maintenance determined from the date of filing for divorce? Or from the date that the divorce is granted by the state? I filed for divorce 2 years ago. The financial settlement says "Commencing upon the first day of the first month following execution of this Agreement and continuing thereafter on a monthly basis, the Husband shall pay maintenance to the Wife for a period of ten years ("Maintenance Period"). So do I receive maintenance 10 years from today, or 10 years from the date I filed for divorce?