Every day of the year is a feast day for someone or something.
The principal day for communal worship (Mass) in the Catholic Church is Sunday.
Sunday, the day of sabbath.
Catholics do not worship the Virgin of Guadalupe. Catholics worship God alone.
They worship God in churches as do all Catholics.
Catholics worship (latria) only God.
Yes.
No, Catholics do not commit idolatry. Catholics worship only God.
They worship in a Catholic Church.
Catholics worship God alone.
Doctrinally your entire life should be lived in worship of God. Every action you take should glorify God. However, if you are asking the more prosaic question of when does a Catholic attend worship? The Church expects Catholics to attend mass on Sunday. Most churches have a number of masses throughout the day.
Many Catholic parishes have Mass every day not just Sundays. That's because we should have the opportunity to worship God every day.
Catholics.
Catholic AnswerThat depends entirely on how you are defining "worship." If you are using the word "worship" as most protestants in the English speaking world currently use the word, you are referring to the adoration that is due to God alone. In that sense of the word, Catholics worship God, and only God. As He is the only Divine Being, our Creator, and Eternal, He is the only thing worthy of Adoration. Catholics call this latria. So to answer your question, in that sense of the English word, worship, Catholics worship nothing besides God.
They worship in the Catholic Church. Catholics worship God "in spirit and truth" (see St. John 4:23). They attend Mass and receive the other Sacraments in Church so that they are fed to go out and worship Him in their daily lives "in spirit and truth."