Karna Vedha or ear boaring is done to facilitate wearing of ornaments. Moreover Karna vedha is said to prevent the child from diseases relating to intestines and from swelling of testicles.
Time: Karna vedha should be done either on 10th ,12th or 16th day; or in 6th or 7th or 8th month or in odd years from the child birth.
Nakshatras: All friendly stars (Mrigasira, Revati,Chitra and Anuradha), all short nakshatras ( Hasta, Aswani, Pushyami and Abhijit), Sravanam, Dhanishta and Punarvasu are good.
Days: Monday, Wednesday, Thursday and Friday are good.
Tithis: All tithes except Rikta tithes and Amavasya are good.
Karnavedha lagna should have benefics in kendras and Tikonas. Malefics should be in 3,6,11 houses. 8th house should be vacant and should not be aspected by any planet. The lagna sign should be preferably belonging to Jupiter or Venus with Jupiter in lagna. Proper Chandra bala and Tarabala should be seen for the child.
IMPORTANT : For male child karnavedha should start with right ear first and then left ear. For female child it starts with left ear first and then right ear.