The resurrection was on the first of the 7 sabbaths, on a Saturday. Leviticus 23:15.

The women went to the tomb on a Saturday. The resurrection day was a Saturday which was the first of the seven sabbaths which lead to Pentecostal day, according to the faithful translations of the Greek.

But late in the sabbaths, at the dawning into the first of the sabbaths, Mary the Magdalene and the other Mary came to gaze upon the grave. Matthew 28:1 LITV

Matthew 12:40 ASV
(40)  for as Jonah was three days and three nights in the belly of the whale; so shall the Son of man be three days and three nights in the heart of the earth.
Jonah 1:17 ASV
(17)  And Jehovah prepared a great fish to swallow up Jonah; and Jonah was in the belly of the fish three days and three nights.
Matthew 28:1 ASV
(1)  Now late on the sabbath day, as it began to dawn toward the first day of the week, came Mary Magdalene and the other Mary to see the sepulchre.