Just look at the names of the planents in our solar system – Mercury, Venus, Mars, Jupiter, etc. All of them are named after Roman gods (except Uranus which I believe is greek).
The months include a mixture of Latin Ordinals (September = 7th month, October=8th, November =9th, December =10th), descriptives (March - the month when the Roman campaign started marching for the year, February from februum=purification, April from aprillus - opening), and Roman Gods and Emperors (Janus, Juno, Maia, Augustus, Julius)
The days of our English week are mostly saxon gods: Moon, Tiew, Wotan, Thor, Frigg, (Freya and/or washing), Sun. Freya got replaced by Saturn somehow…
ANd in the latin-derived languages, the days are named for the planets, themselves named for gods.
Moon, Mars, Mercury, Venus, Jupiter, Saturn, and Sun.