Teaches MV users how to make a fully functional in-game clock and calendar · By JohnDoeNews
I checked and this seems compatible with MZ. Actually, was it made in it? The events are named, which made me wonder (or maybe I just don't know how to do that in MV).
This was made in MV and can't be opened in MZ. But this method once learned in MV can be used in MZ.