Mangala Gauri fast is observed on every Tuesday of Shravan month.
All Vrats of Shravan Masa increases the happiness and prosperity.
As this fast is related to good fortune, it is observed by married women and newly married ladies.
The motive behind this vrat(fast) is, wish for long and happy life of husband and child.
Women who’s Kundali have less of happiness in married life or have inauspicious Yogs like isolation after marriage etc., should observe this fast, especially.
In context of this fast, it is believed that if this Vrat is done in a systematic manner then it increases the happiness and peace of the married life.