Mark 16:2
And very early on the first day of the week, after sunrise [i.e., on Sunday morning], they went to the grave site.
Matthew 28:1
Now as the Sabbath day ended and the first day of the week [i.e., Sunday] approached [Note: See Mark 16:1-2 for the exact timing], Mary from Magdala and the other Mary [i.e., Jesus' mother. See Matt. 27:56] went to look at the grave site.
Luke 24:1
Now at early dawn on the first day of the week [i.e., early Sunday morning], the women [See Mark 16:1] went to Jesus' grave site, taking the spices which they had prepared [for His burial].
John 20:1
Now early [in the morning], while it was still dark on the first day of the week [i.e., Sunday], Mary from Magdala went to the [cave-like] tomb and saw the stone [had been] removed from [the entrance of] the tomb.