Acts 20:7
And upon the first day of the week, when the disciples came together to break bread, Paul preached unto them, ready to depart on the morrow; and continued his speech until midnight.
is the word day translated correctly?.....and continued his speech until midnight (which would be the 8th day). I may be wrong.
Acts 2:46
Day by day continuing with one mind in the temple, and breaking bread from house to house, they were taking their meals together with gladness and sincerity of heart,
Having a meal is not the same as God/Jesus telling us very clearly what day is His Holy day. If God is transferring His Holy day from the seventh day to the first day there would be a clear command saying so. What you provided is that they had a meal together which happened often. How does that verse compare to these?
Remember the
sabbath day, to keep it holy.
- Exodus 20:8
But the seventh day is the
sabbath of the LORD thy God: in it thou shalt not do any work, thou, nor thy son, nor thy daughter, thy manservant, nor thy maidservant, nor thy cattle, nor thy stranger that is within thy gates:
- Exodus 20:10
For in six days the LORD made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the LORD blessed the
sabbath day, and hallowed it.
- Exodus 20:11
Every
sabbath he shall set it in order before the LORD continually, being taken from the children of Israel by an everlasting covenant.
- Leviticus 24:8
Keep the
sabbath day to sanctify it, as the LORD thy God hath commanded thee.
- Deuteronomy 5:12
Blessed is the man that doeth this, and the son of man that layeth hold on it; that keepeth the
sabbath from polluting it, and keepeth his hand from doing any evil.
- Isaiah 56:2
Also the sons of the stranger, that join themselves to the LORD, to serve him, and to love the name of the LORD, to be his servants, every one that keepeth the
sabbath from polluting it, and taketh hold of my covenant;
- Isaiah 56:6
But pray ye that your flight be not in the winter, neither on the
sabbath day:
- Matthew 24:20
And he said unto them, The
sabbath was made for man, and not man for the
sabbath:
- Mark 2:27
And now when the even was come, because it was the preparation, that is, the day before the
sabbath,
- Mark 15:42
And he came to Nazareth, where he had been brought up: and, as his custom was, he went into the synagogue on the
sabbath day, and stood up for to read.
- Luke 4:16
And they returned, and prepared spices and ointments; and rested the
sabbath day according to the commandment.
- Luke 23:56
I can keep going but hopefully you get the point. There is nothing in the Bible that states the first day of the week is our Lords Holy day but God wrote His everlasting covenant on stone that clearly defines His Sabbath day being on the seventh day.