Since Glitch has its own in-game calendar system that bears no resemblance to real-life calendars save the fact that there are twelve months, I think it is needless to have a 24-hour day. Would it not be better that the in-game clock reflects the real-time time by having 4-hour day?
Information on time (for learning skills, raising crops etc.) are given IRL time. If a Glitch hour is of same length as a real-life hour, then the information given is also in-game accurate.