Why Are "The Days Of The Week" Different in Portuguese, Compared To The Other Romance Languages?

Hi, all.

I translated a short text, and I was wondering if it is natural in terms of language flow.

It's the following:

In the Roman Empire age, days of the week were named in reference to Roman pagan gods:

Solis dies - dia do Sol (sunday - domingo)

Lunae dies – dia da Lua (monday - segunda-feira)

Martis dies – dia de Marte (tuesday - terça-feira)

Mercurii dies – dia de Mercúrio (wednesday - quarta-feira)

Iovis dies – dia de Júpiter (thursday - quinta-feira)

Veneris dies – dia de Vênus (friday - sexta-feira)

Saturni dies – dia de Saturno (saturday - sábado)

Yet, at the Holy Week, celebrated by Catholics, the days of the weeks received other names because people thought that it didn’t make sense to call them by pagan terms in at such a sacred Christian time. It’s called “Latim litúrgico - Liturgical Latin” which is where we get this “feira” from the days of the week. it’s come from “feria”, that means “dia de descanso - rest day” in Latin. Who The person who established these special names was Martinho de Dume, Bishop of the city of Braga, Portugal, in the 15th Century after Christ. So, the days were called:

Prima feria (sunday - domingo)

Secunda feria (monday - segunda-feira)

Tertia feria (tuesday - terça-feira)

Quarta feria (wednesday - quarta-feira)

Quinta feria (thursday - quinta-feira)

Sexta feria (friday - sexta-feira)

Septima feria (saturday - sábado)

All days were “feria”, of resting, because it was were the Holy Week period. Then, there was primeira-feira, but it received the name of “Dominus Dei”, or “dia do Senhor - day of the Lord” (in tribute to Christ's resurrection), which is where “domingo” comes from. “Sábado” comes from “shabbat”, the rest day of Jews.

Now, look. If “feria” in Latin is “dia de descanso - rest day”, it makes sense that we have “férias” for holidays (maybe it came from holyday)/vacation. And the funny thing is that “feira” of our week are the days we work and study. Lol