I honestly feel sad that you think the Sabbath rest is in a day.
It is only 'in a day' in as far as it stipulates a certain period of TIME God has made holy and sanctified to himself and to man.
This could have been any day of the week but GOD CHOSE IT TO BE THE SABBATH (Saturday) and we should respect that. It is more than just 'resting'. It is a time when God is personally there to instruct and communicate with man. The rest of the week man should work.
No need to feel sad for me ...I trust GOD to know what HE is doing and wants me to do !. 
Beta in all of your trying to prove how literate you are in matters of the bible and how obedient you are to scripture in terms of what you think are commandments we should follow...
....all you are really proving is how much you DO NOT understand what you are reading and how much you DO NOT understand the character, purpose and intent of God
In other words if you know anything at all you should know
God exists outside of time, if you know that, I mean really know it, you would also know that time as we perceive it only matters for us, not to God.
That is because time does not really exist to God, it only exists for us. Even the most learned of us know that there is really no such thing as time...its only a concept.
What we know as Monday is only Monday because someone, at some point in history said today is Monday.
Try if you will to understand the simple fact that there is nothing in the Universe, nothing in the stars in heaven, the moon or more importantly the Word of God that says today is Wednesday...NOTHING!
The way you know it's Wednesday is because someone at some point in history said so.
There used to be 10 months, there used to be less days in a year, etc etc
In other words, we do not know what day Noah's Ark came to rest on dry land, we do know what day Moses led Israel out of Egypt and even if we did, there is no way of knowing that Saturday in the year 1BC is the same as Saturday in 2011
All we really know is what it is called now.
On top of that It may be Wednesday where I am but in England it's already tomorrow so what time zone do you think should be the officially recognized time zone, the one God recognized by God during Creation?
Okay enough of that...now let me get back to Scripture
Ecclesiastes says a time for everything "UNDER HEAVEN"
This simple phrase means exactly what it says however like many things mentioned in the bible we overlook the profundity of the statement
Simply put, in the spiritual realm, the eternal realm, the realm where God exists THERE IS NO TIME
There is a time under Heaven but
There is no time in Heaven!
Eternity means just that.....timeless
Hence God is the Alpha and Omega, the Beginning and the End, The First and the Last
In other words God is not concerned with a day of the week, we are!
Jesus said man was not made for the Sabbath but the Sabbath for man
The bible says the Sabbath is a sign
A sign is a symbol, a marker of something more substantial
A sign is not the substance
The Sabbath is a sign of The Messiah, The Christ ...He is The Substance of the Sign!
Ok now....
You're on a freeway headed to Los Angeles, you see a sign, it says
50 miles to Los Angeles
THE SIGN IS NOT LOS ANGELES, if you pull over and park at the sign you haven't arrived yet. Though it may give you comfort to know you are not far from your destination it would be foolish for you to park there, calling your friends back in New York telling them you are in Los Angeles...YOU'RE NOT, you're just parked at the sign
The solution: Get back in your car and keep driving until you reach Los Angeles
In the case of Christianity
JESUS IS THE SABBATH
You're parked in the Old Testament.....Jesus Your rest is down the road a piece, get back in the Word of God and keep heading to the destination
The Rest we Have In Christ Jesus
Not a physical rest, not a day of the week, for neither of those will give you Spiritual Rest
The only way you can attain Spiritual Rest is in Christ Jesus Our Lord and Savior
Instead of looking for rest in a day designated by some Roman Emperor, a man made day
Seek a True Rest, A Spiritual Rest the Rest God pointed to in the sign He gave us....
Take a nap in the Arms of Jesus!
