ANSWER: 4th December
Explanation:
The 44th Navy Day was observed on 4th December 2015 and saw screening of Navy Telefilm 2015 titled Empowering India Through Maritime Security and Indigenisation on DD National. This day is celebrated each year to celebrate the success of Operation Trident of Indian Navy on Karachi Harbour during the 1971 Indo-Pak war. Innovation trophies were presented to 4 awardees on this day as well.
