According to Drik Panchang, “In Purnimanta calendar, usually followed by North Indian states, Shravan month starts fifteen days before Amanta calendar.” It also adds, “In Andhra Pradesh, Telangana, Goa, Maharashtra, Gujarat, Karnataka and Tamil Nadu, Amanta Lunar Calendar is followed while in North Indian states Rajasthan, Uttar Pradesh, Madhya Pradesh, Punjab, Himachal Pradesh, Uttarakhand, Chhattisgarh, Bihar and Jharkhand Purnimanta Calendar is followed. Hence half of the Sawan Somwar dates differ in both calendars.”
