I think that we need some programs which start from sunset to sunrise.
I know that the day is the frame in which OS is programmed, so therefore two programs are needed to irrigate during the night.
Nevertheless, many of us thinks in terms of night/day when comes to irrigation: so I suppose that a program which do not consider the 0-12 day, but rather the day/night sequence would be helpful to many of us.
BTW: I know that it’s easy to throw in ideas without taking the burden to work on them !!