Eknath Shashti is observed on the sixth day of the Krishna Paksha (waning phase of moon) of Phalgun month as per traditional lunar Marathi calendar.
On this day, he is believed to have performed Jal Samadhi in the sacred Godavari River and left his body and merged with the Supreme Soul.
Ekanath believed and taught common people that the way of Bhakti (devotion) is easier than the path of knowledge, but it was sufficient by itself to attain Moksha.
About Eknath’s Teaching from the book Sai Baba of Shirdi by M.V. Kamath and V. B. Kher
As the sun requires no help to dispel darkness, so also bhakti required no external help to destroy avidya (ignorance). Eknath held that intellectual knowledge is unnecessary for God realization.
Eknath illustrated this theory by the example of the milkmaids of Vraja. Those milkmaids were manifestly ignorant of any scriptural knowledge but by loving Him and even acting against the injunctions of the Shastras, they realized their spiritual goal.
Eknath also held that in matters worldly as well as spiritual, the help of the Guru was not only valuable but indispensable. Eknath believed in meditation and insisted that even a single moment spent in meditating upon God could destroy tribulation, disease, obstacles, doubts, sins and egoism.