Wikipedia
Śrāvaṇa is a month of the Hindu calendar. In India's national civil calendar, Śrāvaṇa is the fifth month of the Hindu year, beginning in late July and ending in the third week of August. In the Tamil calendar, it is known as Āvani and is the fifth month of the solar year. Śrāvaṇa begins with the Sun's entry into Leo. In lunar religious calendars, Śrāvaṇa begins on the new moon and is the fifth month of the year. Srabon (; also spelt Sravan) is the fourth month of the Bengali calendar. This is also the 2nd month of Varsha (rainy) season.
For many Hindus, the month of Shraavana is a month of fasting. Many Hindus will fast every Monday to the Lord Shiva and/or every Tuesday to the Goddess Parvati. Fasting on Tuesdays of this month is known locally as "Mangala Gauri Vrat".