Unity Day, also known as Prithvi Jayanti, is observed in Nepal every January 11. This public holiday commemorates Prithvi Narayan Shah, the first king of unified Nepal and the founder of the Shah dynasty. Born on January 11, 1723, Shah ascended to the throne at the age of 20 and embarked on a campaign to unify various principalities in the Kathmandu Valley, ultimately forming the Kingdom of Nepal in 1768. Celebrations typically include a procession and a flower laying ceremony at the monument dedicated to Prithvi Narayan Shah in Kathmandu. Various political parties also organize receptions and official events to honor this significant historical figure and his contributions to the nation.