Purushottam Maas or Adhik Maas is an extra month in the Hindu calendar that is inserted to keep the lunar and solar calendars aligned. "Purushottam" is an epithet of Vishnu, to whom the month is dedicated.
The position of Adhik Maas amongst the other months is variable, re-occurring about every 32.5 months.
The other names for Purushottam Maas are Adhik Maas, Mala Maas ('unclean month'), and Malimmacha. Spellings in the Latin alphabet vary, including purshottam, purushottam, purushottama; adhik, adhika; maal, māla; maas, maasa, mās, māsa, mas, mass. This is the thirteenth month of the lunar calendar. Adhik Maas adopts the name of the month that follows.
Purushottam Maas is considered inauspicious and no activities like weddings or moving into a new house are conducted. It is a time for prayer, fasting, charity, and self-improvement.
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