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NATIONAL MOTHER-IN-LAW DAY – Fourth Sunday in October

National Mother-in-Law Day Fourth Sunday in October


National Mother-in-Law Day is observed annually on the fourth Sunday in October. It is a special day to honor the mother of your spouse.  

Some people get along very well with their Mother-in-Law. Others, not as well.  Whichever is the case, this is the day to celebrate them.  


Whether you make a grand gesture or prefer to keep it simple, take a moment to wish a Happy Mother-in-Law Day to your Mother-in-law. Use #MotherInLawDay when posting on social media.


This day, modeled after Mother’s Day, was first observed on March 5, 1934, in Amarillo Texas, where it was initiated by the editor of the local Amarillo newspaper.

There are over 1,500 national days. Don’t miss a single one. Celebrate Every Day® with National Day Calendar®!

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