I'm sorry but I don't understand what you're saying. I know all the words but I don't know the meaning of them combined in that way...
I know how to convert between the dec, hexa and binary numbering systems but I don't understand what you mean by 16+2 nor how I would calculate the NPC not being present in the night but being present during the day (which, if you look at it in NI for example, would be the flags 8-19).
EDIT:
Aha. Okay, THIS I do understand more or less. Thank you very much.