Changing Woman is one of the most important deities in Navajo religion. I wouldn't exactly classify her as being "the goddess of passing time" though she is the ideal for every Navajo woman to emulate from childhood to old age. Changing Woman is both mother and grandmother. Changing Woman is an all-encompassing creator. She bore Monster-Slayer to save this world from the monsters that were threatening the extinction of humans. She created dineh from her own body. She created sheep, set the stars in the sky...she is pretty much everywhere in Navajo mythology, lol. There is little of Navajo culture that Changing Woman didn't have a hand in. So, no, I wouldn't call her the goddess of passing time though she embodies it somewhat by her own being--it's far too diminuitive of a description. Changing Woman is the Mother.

Stephanie

In every man there is something wherein I may learn of him, and in that I am his pupil.--Ralph Waldo Emerson