One which days the Abhyngana Snanam

 ((head oil bath) should not be taken ?

For every custom , the reason is given whether to do or not .

For the Abhyanganasnanam (taking head oil bath) ,

it is restricted to take on particular days.

On Sundays, Tuesdays, and on the Tidhis like,

Padhyami, Chaviti, Shashti, Ashtami, Navami, Chaturdasi and

also on the days of Sraaddhas

(ceremony performed in honour of departed souls),

the Suka Maharshi  said not to take the Abhynganasnanam.

Suppose, in case if any one who takes

 head oil bath on those days,

  as per the Astrological planetary effects

any negative incidents may occur.

What is the meaning for

blowing a Conch (Sankhaaravam) ?

The blowing of a Conch (Sankhanadam)

is done only at the time of auspicious occasions,

 worshipping the deity, and other Divine services.

In the Temples when the Aarati is given

to the Lord (after doing archana and other sacred rituals),

the Sankharaavam is made. 

Even at the house, in the Poojamandir

when the archana is over, the blowing of Conch

is made  which we also know.

 It is the symbolic for eliminating the

evil forces (Dushta Saktis) from the house

and also its sorrounding space.

If we listen the Puranas and sacred scripts

  so attentively with purity of mind,

 what ever the amount of graceful  result we receive 

that is equivalent to once if we blow the conch at that time.

Such a great and auspicious effect the Sankhaaravam has got.