the number of game days played. If the game ended on the 1st month, 3rd week, 6th day = 136.
For example,
Player1 (red, Dungeon, Shakti, Shakti) def Player2 (blue, Inferno, Pyrrhus, Marius) 2SM4d(3), 136
You described the game time, but he is interested in the start date of the game. That is, the actual date.