sentences:  have purvanga vaadi swara and so the time for singing and playing these raagas is between 12 pm to 12 am.In the same way, if the vaadi swara of a raaga is from the utraanga part of the saptak i.e.“Pa Dha Ni” then it is classed as a utraanga vaadi raaga and the time for singing or playing utraanga vaadi ragas is from 12 am to 12 pm.