significance of sandhi puja:The intersection of maha asthami and maha nabami

Sandhi puja is regarded as the most important part of Durga puja .According to hindu mythology it is the time when Chamunda killed chanda and munda,the two generals of shumbha and nisumbha who attacked kaushiki from back.Chamunda emerged from the third eye of the Goddess . She is the most fearful of all the forms of Goddess Shakti.As the goddess killed the two demons she was named as cha-munda or the destroyer of chanda and munda.During this time Durga is worshipped as chamunda.The Goddess is worshipped with 108 lotus .During this time Rama cut off the 10 heads of ravana but Ravana was not killed at that time.He was killed in the evening of navami or the ninth day.This is regarded as the most auspicious time of the 10 day festival.The total time taken is 48 minutes.Of this 24 mins. is meant for asthami and the next 24 mins. is for navami.sandhi puja marks the time when the kundalini shakti reaches the highest point starting from the 1st day and then starts to decrease again.this also ensures thta the time to bid farewell to the goddess has come and we have to wait for 1 more year to see her back.