linguistic:paraphrasing, quality:corruption, stylistic:style_transfer, structural:summarization
Occurrence

At least two lunar eclipses and as many as five occur every year, although total lunar eclipses are significantly less common than partial lunar eclipses. If the date and time of an eclipse is known, the occurrences of upcoming eclipses are predictable using an eclipse cycle, like the saros. Eclipses occur only during an eclipse season, when the Sun appears to pass near either node of the Moon's orbit.