Defense

"Hands of the clock?" Louie asked as Evan nodded. 

Louie thought for a while and said, "If we used the Grand Duchess's idea, then both hands met in the south means six thirty and meet again in the west is nine forty-five."

"Yes."

"Hmm…" Louie thought for a while and then uttered, "The age-of-ceremony starts at eight in the morning, and after that is a ball by eleven, while the Masquerade and the Birthday ball will begin at seven in the evening. If we base it on the message's time, we can exclude the ball tomorrow."

"Even if the ball is held at eleven tomorrow, we should still tighten our security."

Louie nodded, "You are right." Then he looked at the paper again, "Now that we have a clue about the time, we still have to tackle the place where they would meet."

"Center of the green."