There is an annual silence day in the traditions of India. It is called Mauni Amavasya. Mauni means ‘of or for silence’, and amavasya means ‘no-moon day.’
It occurs on the no-moon day of the Maagha month in the Hindu calendar when sun and moon are both supposed to enter the sign of Capricorn (makara rashi).
It is held in the tradition as the day when Manu, the Archetypal Man first appeared on earth; he wedded Shata-roopa (She of a Hundred Beautiful Forms) and generated humankind.
For more information: http://ahymsin.org/main/practice/silence-day-mauni-amavasya-2014.html