NONSENSE? That word found in the modern day EASTER is not the original Greek word. It is Passover and Passover was the feast observed at the time by Christ and His disciples. It was man's tradition that got that word change to Easter as it is not the original word used.
It was "nonsense" the way you worded it. We Christians celebrate the Resurrection of Christ on "Easter Sunday." There was no reason for Jesus and His disciples to celebrate "Easter," the Resurrection any sooner, as it hadn't HAPPENED YET!
According to the scriptures the resurrection occurred on the Sabbath....late. Verse 6 says He is risen!
Now, are you certain of your original statement? Why do you celebrate His resurrection on a Sunday morning? Scripture plainly tells us the resurrection happened on a late Saturday afternoon. I will agree with one thing....the pagans always celebrated "Easter" on a Sunday.