days to do sex as per puranas

NO on these days or time.

from 17th day to first 4 days.

day time on any day.

sasti, astami, ekadasi, chaturdasi, amavasya, purnima, sraddha day, sanskranti day festival day.

Native’s birth nakshatra

7th nakshatra from the birth nakshatra

Ashwini, bharani, megha, revati, and Moola

eclipse day

Sunday, Saturday, and Tuesday

The nakshatra or rashi or day which had witnessed some inauspicious event in the family of the native should also be avoided.

Rikta Tithi - 

even day from periods for sun

odd day for daughter

should not use pill or waste sperm... 

https://nikhilastroworld.com/2016/12/19/right-time-for-intercourse/