Visit;
http://www.translatum.gr/forum/
Here you can easily translate English-Greek.
Type in the word 'one' (hit go) and look for the feminine equivalent in the provided examples shown as μία (mia).
Type in the word 'first' (hit go) and look for the provided examples showing πρώτος (protos).
Now look at the resurrection verses as they appear in the original Koine Greek and ask yourself - what do you see?
God Bless - Pmary65
Re; The Kingdom Interlinear Translation of the Greek Scriptures (1969 & 1985)
The English rendering from the original Greek (resurrection) verses at Matthew 28:1, Mark 16:2, Luke 24:1, St. John 20:1, 19 and Acts 20:7 (breaking bread) all render one of the Sabbaths for μιᾷ τῶν σαββάτων which is transliterated as mia twn Sabbatwn.
Best Regards