The month of Shravan, popularly known as Sawan mas, is the fifth month of the Hindu calender. Shravan is considered the holiest month of the year. It is the first and most auspicious month of Chatur Mas, the four holiest months in the Hindu Calendar.

Durgaashtami is considered a very important day in Hindu religion. Masik Durgashtami Vrat is observed every month on the Ashtami Tithi (eighth day) of Shukla Paksha - the bright half of the lunar calendar. Here's the date-wise list of Durgaashtami Vrat's in 2018 based on Hindu calendar.

Chaturthi is a sacred day, occuring twice a month in the Hindu calendar - on the fourth day of the bright half, one after Amavasya or new moon - called Shukla Paksha and on the fourth of the dark half , one after Poornima or full moon is called Krishna Paksha. Chaturthi in the Krishna Paksha is known as Sankashti Chaturthi, while Chaturthi that falls during Shukla Paksha is known as Vinayaka Chaturthi.

Chaitra Navratri, also known as Vasant Navratri, is the nine-day festival observed in the first nine days of the bright half of the month of Chaitra. According to the Indian lunar calendar, this usually occurs in late March or early April. This period of nine days heralds the onset of spring and also marks the beginning of the new year for the hindu calendar in most parts of India

Shardiya Navratri, the Festival of Nine Nights, is celebrated in honor of goddesses Durga, Lakshmi, and Saraswati. The festival is celebrated for nine nights every year in the Hindu month of Ashvin (September-October) although as the dates of the festival are according to the Hindu calendar (which is based on the Moon), the festival may be held for a day more or a day less depending on the calendar.

Pitra Paksha, also known as Mahalay, is a period of fifteen days. It is the time designated to give devotion or to offer respect to the dead and departed ancestors of the family. These; Fifteen days are called " Pitra Paksha", or most popularly known as "Shraddha (श्राद्ध) or Shradh" days. They are also called by the name of "Kanagat."