Well which is it then? If it's best to fly in total darkness then a moonless night IS important. As crosslink pointed out, that window starts to close on the 15th.
A dark night. No moon. Let all hell just break loose. End it in 5 hours. I have spoken! Make it so.
How about: “The phase of the moon is not important THOUGH it is best to fly the mission in total darkness.”
What I was getting at, the technology we and the Israeli's have are not affected by light of day, night, or anything in-between. That said, it is best to fly in total darkness though not required.