Darsha Amavasya, or Darsh Amavasya, is the no moon night in a traditional
Hindu lunar calendar. Darsha Amavasya is present when the moon is completely
absent. In other terms Amavasya tithi should be present after sunset and during
moonrise to be counted as Darsha.
For example if June 17 is Amavasya and if the time is 4:00 PM
on June 16 to 3:30 PM on June 17. Then Darsha Amavasya is on June 16 even though
the actual Amavasya date is June 17.
Darsha Amavasya is chosen by some communities to perform
Shradh.
Darsha means no moon night.