• Why Hola Mohalla is fixed on 14th March in Nanakshai Jantri
• Nanakshai Calendar (BBC)
• New Nanakshai Calendar released SGPC
• The Sikh Calendar (S Brar)
• The Sikh Calendar (allaboutsikhs)

This is the new Sikh calendar developed by Pal Singh Purewal, that was first used in the year 531 (starting March 1999). The Nanakshahi Calendar was implemented by the Shiromani Gurdwara Prabandhak Committee (SGPC) on April 14, 2003. It 'fixes' dates of 'Sangrands' (beginning of the month) and Gurpurbs in Common Era calendar according to the length of the tropical solar year, instead of the lunar cycle, meaning that dates will not fluctuate from year to year as they did previously. The Nanakshai New Year starts on 1 Chet / 14 March, as the first month of the year as in Gurbani, the date of the birth of Guru Nanak Dev Ji in the year 1469 CE irrespective of the fact that Guru Nanak Sahib’s parkash day falls on a different day.

However, the Guru Nanak Sahib's parkash Gurpurb, and Bandi Chhor Divas (Diwali) shall continue to be celebrated according to the old calendar. To appease the 'Sants', Hola Mohalla date was also made an exception. Amavasyas (new moon) and Puranmasi's (full moon) are also shown separately as The Calendar Reform Committee decided that the dates for Amavasyas and Puranmasis should be given in the Calendar.