Ratha Saptami: Vishnu, in his form as Surya, is usually worshiped on this occasion. Usually, Rathasapthami begins in households with a purification bath by holding a few bilva leaves on one's head while bathing and chanting a verse that is supposed to invoke the benevolence of the deity in all that one takes up the rest of the year. It also involves doing a puja with the ritual 'Naivedyam', flowers and fruits.
Navaratri: The seventh Day of the Navaratri Kalaratri Puja takes place.
^Monier-Williams, Sir Monier (1872). A Sanskṛit-English Dictionary Etymologically and Philologically Arranged: With Special Reference to Greek, Latin, Gothic, German, Anglo-Saxon, and Other Cognate Indo-European Languages. Clarendon Press. p. 1065.
^Rao, S. Balachandra (2000). Indian Astronomy: An Introduction. Universities Press. p. 65. ISBN 978-81-7371-205-0.