Hola Mohalla is a famous and colourful 3-day Sikh festival celebrated during spring. It takes place on the second day of the lunar month of Chett which is the first month of the Nanakshahi calendar used by Sikhs.
If you would like to find out more, head here:
Hola Mohalla 2023 - Dates, Festivities, Venue (holidify.com)
BBC - Religions - Sikhism: Hola Mahalla
Hola Mohalla – Sikh Dharma International