Tomorrow, 27th January 2017 is Mauni amavasya.
Mauni Amavasya occurs in Maga month during January and February as per the traditional calendar followed in North India. It is also called Maghi Amavasya and is the last Amavasya before the occurrence of Sivarathri. As the term Maunide notes, Mauni Amavasya is a day for observing silence and through that silence seeking self-realization and spiritual wisdom. When the mind is silent, it is set up on deep meditation to take a journey into soul and realize self.
Mauni Amavasya is considered powerful since the sun and the Moon enter the sign of Capricorn on this day. On the day of Mauni Amavasya, people take a bath in holy rivers like the Ganges. It is considered equivalent to conducting Rajasuya yagna and Aswamethayagna. And on this day, it is considered sacred to donate clothes to the needy and the poor, offer food to the downtrodden, help the kushta rogi and conduct homams.