vaisakhasya caturdashyam
suklayam sri nrikesari
jatas tad asyam tatpujot-
savam kurvita savratam
(Padma Purana)
“Sri Nrisimhadeva appeared on the fourteenth lunar day (Caturdashi-tithi) of the bright fortnight of the month of Vaishakha. So, on this day, it is proper to worship and celebrate the appearance of Lord Sri Nrisimhadeva