Krishna Janmashtami is observed on the eighth day of the dark half (Krishna Paksha) of the month of Shraavana in the Hindu calendar, when the Rohini Nakshatram is ascendant. The Hindu calendar being lunar, these Krishna Janmashtami's two events the day being the eighth of the waning moon (Krishna-paksha Ashtami) and the Rohini Nakshatram being ascendant may overlap for only a few hours. In such an event, the Krishna Janmashtami festival may be celebrated on different (but successive) days by different people, depending on their local or family traditions.
