If the Specified time for Vow Coincides with Eidul Fitr and Eidul Azha
Issue No. 2289- If a person vows that he/she will observe fast every week on a particular day (e.g., Friday), in case Eid al-Fitr or Eid al-Adha falls on one of the Fridays or an excuse like menses in the case of women occurs, he/she should not observe fast on that day.