Abhisheka to Krishna during Janmashtami Pooja is a major ritual to be observed. In 2017, Janmashtami date is August 14.
Smarta Janmashtami – 14 August 2017
Vaishnav Janmashtami – 15 August 2017
Sri Krishna Jayanti – 13 September 2017 (Rohini Ashtami – Rohini Nakshatra)
Suddhodaka Snana, Panchamrita Snana, Panchamrita Snana, Usnodaka Snana, Pushpabhisheka, etc.. are the Abhisheka types performed during the Janmashtami Puja at Nishita Kaala worship.
The sequence of items to be offered are as follows:
Śuddhodaka snāna: 1 pot of water
Pañcāmṛta snāna: 1 pot of milk, 1 pot of curd, ghee, 1 pot of honey and 1 pot of water mixed with jiggery
Uṣṇodaka snāna: 1 pot of luke warm water
1 pot of water mixed with turmeric powder (also smear the Deity with turmeric powder)
Perform ārati to Their Lordships.
Śuddhodaka snāna: 1 pot of water
Varieties of flowers can be showered on the Deities (optional)
Offer cāmara and vyajana (optional)
With the lemon rub the Deities and clean them with water.
Dry them using the towels and shift them to the altar.
Check this video for detailed Janmashtami Puja Procedure with Mantras and fully explained Puja steps..