Why it is said to light the lamp with

 gingili oil  in the Kaartika maasa ?

The Kaartika maasa starts almost

 in the winter season.

In that season, the  time of days are less

and the nights are excessive and

also in that season it gets cold.

The heat in day time comes down.

There is variance  in the health conditions.

At the time of twilight ( In the evening time ) ,

if we see the lamps  which are lit with the

 gingili oil and also with the Go ghrutam

(cow’s ghee) that gives the much plesantness

to the eyes and also some kind of eye diseases

and also eye doshas (delinquence) will be cured.

Some kind of respiratory problems due to

the atmosphere and the cold will be cured.

The heat in the body which is  lessened

in that winter and that  can be gained to

some extent  and the health condition  would be

 good  because of worshipping with the oil lamps.

In the winter, due to the oil lamp light,

 some species of insects can be destroyed.

 Hence, there is a lot of benefit for lighting the oil lamp.

On Deepavali day (Diwali day) where the

lighting lamps ( with ginjili  oil or goghrutam)

 at home should be placed ?

On Deepavali day, mainly five lighting lamps

ought to be decorated at our homes.

The first and first,  the lamp should be

 placed at Pooja mandir, the second lamp

at the meditaion room or place, the third lamp

should be plced at the well , the fourth lamp

 at the peepul tree, and the fifth lamp

at the Tulasi plant (which Basil). 

Instead of peepul tree the lamp can be

placed in front of the threshold of the main entrance.

Suppose, if the festival is not celebrated

on any other reasons, the lamps can be lit.