Onam is one of the greatest festivals of Kerala. It is the festival, which the keralites celebrates unitedly without the differecnce of caste and religion.Onam is related with King Mahabali who was ruling kerala in a time. He was an Asura king but was very nice and trueful. During his ruling time it is said that people don't even lock their house in the night because , there was no thieves,no corruption,no betrayal. And all people lived unitedly, without the difference of rich and poor. All where facing a good time.
Jewish
Among the Jewish festivals, the Sabbath (Saturday) occupies the pride
of place. The Sabbath gives the labourer every week a day of rest and
leisure.It falls in April or May. Pentecost is another Jewish festival
held in May-June. It has an agricultural and historical significance.
The feast of Tabernacle is another pilgrim festival falling in either
September or October. During this feast, Jews set temporary booths
covered with palm leaves and decorated with citrus and other fruits.
Navarathari
Although it has different names in different parts of India, Hindus from all regions celebrate it. From Kashmir in the north to Tamil Nadu in the south, and from Gujarat in the west to Sikkim in the east, it is celebrated with great enthusiasm as the conquest of good over evil. Every region has its own myths and reasons to explain this.
Jain Fwestival
There is an ancient Jain Temple at Jainamedu near the Palakad town. According to a legend, one Sutar, head of the Jains, built this temple 500 years ago for the Jain sage Chandranathaswamy.
Mahasivarathri
The Mahasivarathri is essentially a religious festival unlike the Onam and Thiruvathira. The word means `the great night of Siva. According to the Sivapurana, it falls on the Krishna Chathurdasi day which is on the fourteenth day during the warning of the moon in the month of Megha, though in some years it may occur in Phalguna also. In Kerala the month of Kumbham is noted for the Sivarathri festival which falls in February. -March.