Two moons by day at Capena

Livy's list for 217 BC says that at Capena, north of Rome, two moons rose in daytime.

217 BCE · 42.14, 12.54 · status: legend

The sceptical view

A 'mock moon' (paraselene) or a halo phenomenon is the usual natural reading.

Sources

1. Livy 22.1 (Latin Library)
2. Wikipedia: Moon dog