Explanation:

.Vasant Panchami is the Hindu festival that highlights the coming of spring. This festival is usually celebrated in Magh, which is between the months of January and February in Gregorian calendar.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.