Vasant Panchami, also called (Saraswati Puja) is a festival that marks the preparation for the arrival of spring. The festival is celebrated by people in various ways depending upon the region in the life in the Indian subcontinent. Vasant Panchami also marks the start of preparation for Holika and Holi, which take place forty days later. The Vasant Utsava (festival) on Panchami is celebrated forty days before Spring, because any season’s transition period is 40 days, and after that, the season comes into full bloom.
https://www.ganeshaspeaks.com/predictions/festivals/vasant-panchami-significance-rituals-legend/
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