The festival of Karva Chauth is celebrated on the Chaturthi of Krishna Paksha of Kartik month. This festival is very important for happy women. On the day of Karva Chauth, Suhagan women keep a waterless fast throughout the day for the long life of the husband and worship Karva Mata in the evening. After this, after offering arghya to Chandradev, she sees the husband's face with a sieve and then drinks water, hence it is also called Nirjala fast. But do you know why the moon is worshiped on the day of Karva Chauth.