Absolutely true.
I know.....
GOD (Krishna) himself was the eighth child.
If we are going to be esoteric here
let me add:
a little known fact is
that even in the Hebrew Bible
there were 8 days of creation
not seven.
"In the beginning God created the heaven and the earth.
And the earth was without form and void
and darkness was upon the face of the deep.
And the Spirit of God moved
upon the face of the waters.
And God said
Let there be light
and there was light.
And God saw the light
that it was good
and God divided the light from the darkness.
And God called the light Day
and the darkness he called Night.
And the evening and the morning were the first day."
So before DAY 1
on which God divided light from darkness
there was DAY 0
(the beginning)
the Day of the Cosmic Mother
the day on which God created the Heaven and the Earth
(from the Cosmic Mother)