the ten day festival marks the victory of Godess DURGA over the demon MAHISHA. Hence she is called MahishasuraMardini . DURGA pooja the the most important festival in eastern india .
Also marks the victory of lord RAMA over RAVANA esp in northern india .
Marks the beginning of the north east monsoon and autumn .
Saraswathi goddess of learning and Hayagriva god of knowledge are worshipped on navami , the ninth day .
The tenth day marks Vijayadashami , the day of victory .
In southern india many families display painted clay images of the gods on temporary steps , esp different aspects of the divine mother .
One of the most important festivals in the calendar of the sanathana dharma , a ten day celebration and holiday .