Shravan, the fifth month of Hindu calendar is one of the auspicious months to worship Lord Shiva. Mondays in Shravan are considered auspicious and are dedicated to Lord Shiva. Observing fast on Mondays of Shravan and performing puja and Rudrabhishek brings peace, prosperity, good health and marital bliss. Devotees are advised to consume vegetarian meal only once in the evening after performing puja. Observing fast and performing puja on Shravan Shivratri helps to get rid of Pitra Dosha. Jalabhishek is performed to please Lord Shiva. Devotees should offer water and uncooked milk, pour it in a brass vessel and offer it to Lord Shiva.
Northern states like Rajasthan, Uttar Pradesh, Madhya Pradesh, Himachal Pradesh, Bihar, Chhattisgarh, and others will observe Shravan from July 28 to August 26. On the other hand, Shravan maas begins on August 12 and ends on September 9, in the states of Maharashtra, Gujarat, Goa, Andhra Pradesh, Karnataka and Tamil Nadu. The whole month is considered auspicious to seek the blessing of Lord Shiva. Devotees keep various fasts during Shravan month to please Lord Shiva. All Mondays in the month of Shravan are considered auspicious for fasting and known as Shravan Somwar or Sawan Somwar vrat.
Sawan Somwar vrat dates (Amanta calendar) for Andhra Pradesh, Goa, Maharashtra, Gujarat, Karnataka and Tamil Nadu are:
All Tuesdays in the month of Shravan are dedicated to Goddess Parvati. Observing fast during Tuesdays in the holy month are called as Mangala Gauri vrat.