Naveen disclosed the date after meeting governor S.C. Jamir..
"I met the governor and submitted the letter electing me as the leader of the BJD legislature party. The new council of ministers will be sworn in on 21st morning."
Naveen is set to visit his Assembly constituency tomorrow to meet his voters.
Responding to a query on cabinet formation, senior BJD leader Kalpataru Das said, "Naveen will take the final decision".
The BJD swept the recently concluded Assembly polls winning 117 out of 147 seats, while the Opposition Congress got 16 followed by the BJP with 10.