Bhaktivinode's son, Bhaktisiddhanta Sarasvati Thakura . It is told among some Gaudiya Vaishnavas that a young Bhaktisiddhanta, skilled in astronomy , created an ample Vaishnava calendar at Jagannatha dasa Babaji's request, detailing all holidays, including the appearance and disappearance days of prominent devotees. [ edit ] Later life Srila Jagannatha dasa