The Greek astronomer Hipparchus introduced three cycles that have been named after him in later literature. == Calendar cycle == Hipparchus proposed a correction to the 76-year-long Callippic cycle, which itself was proposed as a correction to the 19-year-long Metonic cycle.
The Greek astronomer Hipparchus introduced three cycles that have been named after him in later literature. == Calendar cycle == Hipparchus proposed a correction to the 76-year-long Callippic cycle, which itself was proposed as a correction to the 19-year-long Metonic cycle.
Source: Wikipedia "Hipparchic cycle" · CC BY-SA 4.0
Share this article: X · Bluesky