Nanakshahi

The Nanakshahi (Punjabi: ਨਾਨਕਸ਼ਾਹੀ, nānakashāhī) calendar was adopted by Banda Singh Bahadur in 1710. However, Sikhs have traditionally recognised two eras and calendars: the Nanakshahi and Khalsa. Traditionally, both these calendars closely followed the Bikrami calendar but the Nanakshahi Sammat began on Kattak puranmashi (full moon).

The present Nanakshahi calendar is a tropical solar calendar that was adopted by the Shiromani Gurdwara Prabhandak Committee to determine the dates for important Sikh events. The calendar was implemented during the SGPC presidency of eminent Sikh scholar Prof. Kirpal Singh Badungar at Takhat Sri Damdama Sahib in the presence of Sikh leadership. It was designed by Pal Singh Purewal to replace the Bikrami calendar and has been in use since 1998. The epoch of this calendar is the birth of the first Sikh Guru, Nanak Dev in 1469. New Year's Day falls annually on what is March 14 in the Gregorian Western calendar.

The calendar is accepted in about 90% of the gurdwaras throughout the world. There is some controversy about the acceptance of the calendar among certain orthodox sectors of the Sikh world. Some orthodox organizations and factions have not accepted it including many orders dating from the time of the Gurus such as Damdami Taksal, Buddha Dal Nihangs, Takhats etc.

Features of the new calendar:

The months in the Nanakshahi calendar are:

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