Thank you so much for your post! Apart from just being a wonderful friend of mine on MM, I am grateful for your kind words for me and all others who share in site. I have never been called luscious by another girl, but hey I'll take it! LOL!
Theoretically, yes it is possible as it is a program. Two things though:
1. A program can also be written as 'random'. Chances of finding items may or may not be dependent on any specific factor, the command could just be that 1-5 items drop without any charms, and 6-10 with one. So it may not be luck, but it is still random.
2. I have tried it but I think there might be too many permutations for me to try it manually. For example, 2:4x works for Sakura at night but not for silhouette nor will it be the same for Room 51 at night. So you have rooms, room conditions, phenomena and time. In addition to what is it you want to get, is it weapons, collection items, quest items?
At any rate, to help you out I started to write down drop rates depending on time. If it starts forming some kind of pattern that actually makes sense, I will share with you!