Karwa Chauth is a major Hindu festival, celebrated primarily by women in the days leading up to Diwali. This festival is observed on the 4 day after Purnima (full moon), in the Hindu Lunar calendar month of Kartika. This year, Karwa Chauth will be observed on November 4, 10 days prior to the celebration of Diwali.
Hope this day strengthens the bond of love between you two. May the Almighty bless you with a happy and long married life. Happy Karwa Chauth!