Kenodromia

Kenodromia (Greek, 'running in emptiness'), the oldest form of the void-of-course rule, from Hellenistic astrology. The Moon is counted void when it will complete no major connection within its next 30 degrees of travel, whether or not it changes sign in that stretch. It gives voids that are far rarer AND far shorter than the sign-based rule most modern apps show: measured over six months, the sign rule found 81 and filled about a quarter of the clock, while this one found 2, totalling about five hours. On 28 August 2026 both begin at the same minute and the older rule ends 2.8 hours later where the sign rule runs on for 34.