"Estacion" means "station" in English.
It's the season. It's also "la estacion", not el.
'La quinta estacion' translates to meaning 'the fifth season'. It can also be written 'La 5a estacion'. It is likely to be used when describing television shows.
Train station.
in what station is it.
In the space station
It means, "What season [of the year] is it?"
5a is the spanish abbreviation for "quinta" (Like us writing 5th for fifth) and estacion is station. The fifth station
the train station
what season do you like more? Which station do you like most. Estacion can refer to either season or station.
It means, "What season is December in?"
In what season is it very cold?
In what season/part of the year is (your) birthday