The Nanakshahi (
Punjabi: ਨਾਨਕਸ਼ਾਹੀ, nānakashāhī) 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
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 sectors of the Sikh world.
 Some organizations and factions that have not accepted include the Sant Samaj,
Damdami Taksal, and Buddha Dal
Features of the New Calendar:
Bikrami calendar Solar Calendar as Base
- Uses the accurate
Tropical year (365 Days, 5 Hours, 48 Minutes, 45 Seconds) rather than the
- Called Nanakshahi after
Guru Nanak (Founder of
- Year 1 is the Year of Guru Nanak's Birth (1469 C.E.). As an example, December 2017 CE is Nanakshahi 549.
- Is Based on
Gurbani - Month Names are taken from
Guru Granth Sahib
- First Month is Chet, as stated in Gurbani (Ex. Barah Maha Baani)
- Seasons stay intact with Gurbani
- Contains 5 Months of 31 days followed by 7 Months of 30 days
- Leap year every 4 Years in which the last month (Phagun) has an extra day
- Approved by
Akal Takht in 2003