Again, God's Calendar is not ours. It doesn't say that Saturday is the seventh day. There is also a scripture about "Woe to you, Pharisee's and Hypocrites"...something about "straining at a nat and swallowing a camel".....
Whether the 7th day is Saturday or Sunday makes NO difference regarding Christ's mercy or salvation. And then there is the issue of worrying about the day used for sabbath, and rejecting the true Church ordained by Christ....
The Church ordained by Christ was "The Church of God". You'll find this commanded in John 17:11, [Holy Father, protect them by the power of your name- the name you gave me-so that they may be one as we are one]. In other words the name of God Himself.....not Catholic....or Universal....or any other such appellations of mankind.
Also see Acts 20:28/I Corinthians 10:32/I Corinthians 11:22/I Corinthians 15:9/Galatians 1:13/I Corinthians 1:2/ II Corinthians 1:1/ I Timothy 3:5/ I Timothy 3:15/ I Corinthians 11:16/ I Thessalonians 2:14/ II Thessalonians 1:4. These are all the places you will find the Church of God identified in scripture and you will never see the Church established by Jesus Christ called anything else.
God established the Seventh Day Sabbath as holy and your organization, with out the slightest Biblical authority, changed it to suit their purposes.