Before revision: According to this leap rule, seven synodical month have to be intercalated within tthe duration of a Metonic cycle, which has exactly nineteen solar years.Werner Papke: Zwei Plejaden-Schaltregeln aus dem 3.
After revision: According to this leap rule, seven synodical month have to be intercalated within the duration of a Metonic cycle, which has exactly nineteen solar years.Werner Papke: Zwei Plejaden-Schaltregeln aus dem 3.