tiTi m. f. ( Siddh. stry. 25 ) a lunar day (30th part of a whole lunation of rather more than 27 solar days; 15 Tithi s, during the moon's increase, constitute the light half of the month and the other 15 the dark half; the auspicious Tithi s are Nandā , Bhadrā , Vijayā , Pūrṇā , VarBṛS. ic, 2 ), Gobh. i f. ; ŚāṅkhGṛ. ; Mn. &c.