Dear list members is jayantī in its meaning as birthday (i.e. kṛṣṇa-jayantī, ganeśa-jayantī etc.) sanskrit?  I had always assumed that to be the case but a sanskritist told me that jayantī as birthday was marathi and not sanskrit .  I did not see an entry for  jayantī in Apte's dictionary or in Boehtlink-Roth but Monier-Williams had a hanumaj—jayantī f. the day of full moon of the month Caitra (being the supposed birthday of Hanumat)