The celebration of 'Chatti' i.e the sixt day after the birth of Bhagwan Shri Krishna!
This very important ceremony is performed to appease Mother Shashti.
By performing the Chatti ceremony one is acknowledging to Shashti Devi/Mother Earth of Her elevated position and seeking Her blessings for the new born, that this child will grow up to be a Putra/Putri (a spiritual child) with divine qualities.
Nand ke anand bhayo, jai kanhaiya lal ki.
Jai Shri Krishna!