Saubhagya Sundari Vrat is observed on the third day during the Krishna Paksha of Margasheersh month in North India and also during the third day of the Shukla Paksha in Chaitra month . The corresponding period in Gujarat and Maharashtra is the Kartik month. The vrat is observed by married women for the long life of their husbands.
Saubhagya Sundari Vrat is dedicated to Mother Goddess. In some regions the Goddess to whom the Vrat is dedicated is named as Saubhgyasundari.
This is not a hugely popular vrat and is only observed in certain parts of North India .