I came up with the concept (back in Total Axis Pack, IIRC). Since then, Ray Tapio has used it in just about every product he puts out.
Essentially it comes down to something like this: "Night Rules are in effect [EXC: there is no Scenario Defender or Attacker
(i.e. rules E1.2, 1.4 are NA)]. The Base NVR is [X], with a [full moon] and [overcast]."
It pretty much does away with Scenario Defender HIP and No Moves, and Attacker Cloaking. My intent was to represent an already ongoing battle at night, not a surprise attack, first round. Tapio has since used it in almost all night scenarios, as he perceives most players avoiding playing with full night rules.