Shiv Jayanti
Shiv Jayanti, also known as Shivaji festival, is a festival and public holiday of the Indian state of Maharashtra. This festival is celebrated on February 19, celebrating the birth anniversary of Shivaji I, the first Chhatrapati of the Marathas. He established Hindavi Swarajya (Hindavī Svarājya; "Self-Rule of the hindavi people"). Some people celebrate this day as per Hindu Calendar in Maharashtra. Birth of Shiv Jayanti 
Shivaji I was born at the Shivneri fort on the third day of the Krishna Paksha of the Phalgun month in the year 1551 of the Shalivahan Shaka. In the Gregorian calendar, the date generally occurs between February and March. As per the Gregorian calendar, the date is accepted to be February 19, 1630, However, many Hindus celebrate Shiv Jayanti as per the Hindu calendar. The Marathi Shalivahana Hindu calendar birthdate of Shivaji is Falgun Krishna paksha 3, 1551 Julian February 19, 1630, in Shivneri Fort. The error of not converting the Julian date to the corresponding Gregorian one is still not corrected. History

In 1894, Lokmanya Bal Gangadhar Tilak started public celebration of the birth anniversary of Shivaji I as 'Shiv Jayanti' to inspire the youth to become like Shivaji I Maharaj. It is a misconception that Lokmanya Tilak first started celebrating Shiv Jayanti .Lokmanya Tilak started public celebration of the Ganesh Chaturthi festival. Both these festivals initially began in Maharashtra, but peoples all across India and the world celebrate them today. References

Festivals in India
Public holidays in India
February observances
Birthdays