Wrong. Sabbath means rest day. The day has been changed from the seventh day to the first day and is a fulfillment of the OT sabbath in which we still rest (in Jesus). Therefore a Christian sabbath.
Roman Catholicism
In 1998 Pope John Paul II wrote an apostolic letter Dies Domini,[33] “on keeping the Lord’s day holy”. He encourages Catholics to remember the importance of keeping Sunday holy, urging that it not lose its meaning by being blended with a frivolous “weekend” mentality.
In the Western Catholic Church, “Sabbath” is a synonym of “Lord’s Day” (Sunday), which is kept in commemoration of the resurrection of Christ, and celebrated with the Eucharist (Catholic Catechism 2177).[34] It is also the day of rest. Lord’s Day is considered both the first day and “the eighth day” of the seven-day week, symbolizing both first creation and new creation (2174).[34] Roman Catholics view the first day as a day for assembly for worship (2178, Heb. 10:25),[34] but consider a day of rigorous rest not obligatory on Christians (Rom. 14:5, Col. 2:16).[35] Catholics count the prohibition of servile work as transferred from seventh-day Sabbath to Sunday (2175-6),[34][36] but do not hinder participation in “ordinary and innocent occupations”.[37]
Cardinal Gibbons affirmed Sunday Sabbath as a sign of the Roman Catholic Church’s sufficiency as guide:
Code:
Now the Scriptures alone do not contain all the truths which a Christian is bound to believe, nor do they explicitly enjoin all the duties which he is obliged to practice. Not to mention other examples, is not every Christian obliged to sanctify Sunday and to abstain on that day from unnecessary servile work? Is not the observance of this law among the most prominent of our sacred duties? But you may read the Bible from Genesis to Revelation, and you will not find a single line authorizing the sanctification of Sunday. The Scriptures enforce the religious observance of Saturday, a day which we never sanctify.
—Faith of Our Fathers, Cardinal Gibbons, p. 72 [38]