It is in Hindu mythology
Shiva is the god of immortality
Today is Mahashivratri
Marking it as marriage anniversary
of lord shiva and goddess Parvati
Day is celebrated with
worship of Lord Shiva
by fasting ,meditation
and performing yoga
Night is spent keeping awake
and singing devotional songs
to receive great compassions
What a nice ritual of
detoxification in India
With so much fun fair
and scientific idea.