Someshwar Puja is observed during the Shukla Paksha of
Shravan month as per traditional Hindu lunar calendar followed in North India. Someshwar
form of Shiva is worshipped during the puja. Information regarding this puja is
found in the Narad Puran. Some devotees observe a vrat on the occasion.
The puja and vrat is associated with Shiva rescuing moon (Chandra
or som) and giving refuge to him in his matted locks.
Those observing the vrat wake up early morning, take bath,
and perform puja to Shiva by making clay Shivling. Only vegetarian food is
eaten on the day. White colored Prasad is prepared and offered in the evening.
The fast is observed for three months on all Mondays during
Shukla paksha or waxing phase of moon.
It is believed that on successful completion of the vrat, a
devotee will be blessed with knowledge, health and wealth.