Can you not count then? Yes it was on the 1st day of the week. We see a Wednesday crucifixion impossible...
So if you agree Lord Jesus rose on the first day of the week, Sunday, then that means sometime after sunset Saturday. Three things God's Word gives us to mark the days...
1. Jesus had to have been crucified at the required passover sacrifice time to become 'our Passover sacrificed for us' (1 Corinthians 5:7). This has to be 14th Nisan, at evening before sunset (Exodus 12:6).
2. He said His body would be in the earth for a literal period of 3 days and 3 nights. When time is given in both a day and a night it is always a literal 24 hour period.
3. Jesus rose on the first day of the week, Sunday, sometime between sunset Saturday and dawn on Sunday (Matthew 28).
The below timing is per the Hebrew reckoning of a 24 hour period, from sunset to sunset, which is a requirement.
Jesus rose some time after Saturday sunset, which began Sunday, 1st day of the week.
3rd day = Saturday dawn to Saturday sunset.
3rd night = Friday sunset to Saturday dawn.
2nd day = Friday dawn to Friday sunset.
2nd night = Thursday sunset to Friday dawn.
1st day = Thursday dawn to Thursday sunset.
1st night = Wednesday sunset to Thursday dawn.
14th Nisan at evening, Wednesday, Christ crucified and died in the evening; His body buried just prior to sunset which would begin Thursday the 15th, a high day.