Period of Sadhana:
Ref: Sri Ramakrishna the Great Master - Part 2 - Ch 8: Period of Sadhana of Sri Ramakrishna:
Thursday, May 31, 1855: Consecration of the Dakshineshwar Kali temple, and Sri Ramakrishna assuming the office of the priest towards the end of the year.
(A) 1856 - 1859: The first four years:
1. Sadhana of Kali (Apatya Bhava) (God as Mother)
2. Sadhana of Hanuman (Dashya Bhava) (As Servant of God)
(B) 1860 - 1863: The second four years:
3. Sadhana of Tantra (Apatya Bhava) (God as Mother)
(C) 1864 - 1867: The third four years:
4. Sadhana of Ramalala (Vatsalya Bhava) (God as Child)
5. Sadhana of Krishna (Madhura Bhava) (God as Lover)
6. Sadhana of Vedanta (God as Consciousness)
7. Sadhana of Islam (God as Allah)
Ref: Sri Ramakrishna the Great Master - Part 2 - Ch 20 to 21: Worship of Shodasi:
1873: Sri Ramakrishna worshipped the Holy Mother as Shodasi on the dark night of the new moon day of the Phalaharini Kali puja on 1873. A year later Sri Ramakrishna performed the Sadhana of Christianity.
8. Sadhana of Christanity (God as Christ)