Janmashtami Quote: This festival occurs on the eight day (Astami) of a lunar f...

This festival occurs on the eight day (Astami)
of a lunar fortnight hence the name (Krishna+astami).
Krishnastami which comes sometime in August is
celebrated over two days.
The first day is Krishnastami or Gokulastami.
The second day is called Kalastami
or
more popularly
Janmastami.