YES, WE CAN KNOW 'THE DAY' OF THE WEEK AND 'THE HOUR'.............

Jesus said, "But of that day and hour KNOWETH NO MAN , no, not the angels of heaven ,  but MY FATHER ONLY."

Jesus did  NOT SAY that " no man " can ever know , may never know,  will never know, or shall ever know. Jesus made this true statement BEFORE He was crucified and resurrected  to the Father. Many things changed AFTER that event such as the Covenant of Law was replaced by the Covenant of Grace. Also, when Jesus was resurrected to heaven to sit at the right hand of the Father the Father told Jesus ALL THINGS which Jesus had not previously known according to :

Revelation  1:1

"The REVELATION OF JESUS CHRIST  WHICH GOD THE FATHER GAVE UNTO HIM TO SHOW TO HIS SERVANTS...."

SO, THERE YOU HAVE IT :

I submit to you  "that day ( of the week) and  hour" of that day are now revealed to us in the Scriptures. Before the resurrection of Jesus there was no way any man could know "that day and hour", but Jesus SET THE PATTERN for us to know "that day and hour" of the future resurrection of His Body of Christ Church BY "THE DAY AND HOUR" OF HIS OWN RESURRECTION as the "Firstfruits of the Dead".

The "day and hour" of the resurrection of Jesus is recorded for us in :

Mark 16:9

"Now when Jesus was risen EARLY THE FIRST DAY OF THE WEEK...."

Scriptural days begin at sunset in Jerusalem and end at sunset in Jerusalem. The last day of the week is the 7th day Sabbath Day that ends at sunset. . Therefore, Jesus resurrected "EARLY" after sunset on THE DAY FOLLOWING THE SABBATH DAY SUNSET which is "THE FIRST DAY OF THE WEEK". 

Therefore, the PATTERN IS SET for the resurrection/ rapture of the "Firstfruits of the Spirit" Body of Christ Church which LIKEWISE will occur "EARLY ON THE FIRST DAY OF THE WEEK."

Both the 'Firstfruits of the Dead', ie. Jesus,  and the 'Firstfruits of the Spirit', ie.  the Church,  resurrections are both ORDAINED BY GOD in Leviticus  23:10-11 and Leviticus 23:16-17 to occur "ON THE MORROW AFTER THE SABBATH" which is 'THE FIRST DAY OFTHE WEEK'.  

Therefore, we now know that our resurrection / rapture will occur at an "EARLY" HOUR AFTER A SABBATH SUNSET in Jerusalem time. You can adjust Jerusalem sunset time to your local time to determine what hour to watch according to :

Revelation 3:3

"If therefore you shall NOT WATCH, I will come upon you as a thief, and you shall NOT KNOW WHAT HOUR I will come upon you."

According to Your Holy Word, come Lord Jesus !