It specifically says what day it was:
John 19:30-31
30 When he had received the drink, Jesus said, “It is finished.” With that, he bowed his head and gave up his spirit.
31 Now it was the day of Preparation, and the next day was to be a special Sabbath. Because the Jewish leaders did not want the bodies left on the crosses during the Sabbath, they asked Pilate to have the legs broken and the bodies taken down.
The only way to solve this riddle is that the first day of the week is Monday after Sunday. This simply means the gospel writers used Roman weekdays.
Actually, they used the Byzantine calendar.
And what is a special Sabbath
Special Sabbaths of the Jewish Year
Special Sabbaths of the Jewish Year
Special Sabbaths and High Sabbaths are not the same as The Seventh-Day Sabbath.
And we are using the Roman calendar from Friday to Sunday, and the interpreters interpreting 3 days and 3 nights and have been using the Roman calendar since year one AD.
And even using the timetables the Israelites used where days begin at 6:00 p.m. it will still come out the same Saturday night would be the first day Sunday night would be the second day Monday night would be the third day.
The interpreters counted Friday as day one, Saturday as day 3, Sunday as day 3. which is where they messed up, they did not leave a 24-hour span from the beginning of the first day when Christ was crucified and buried.
By their interpretations It is believed Christ died around the 9th hour which has been interpreted as 3:00 on a Friday the first day should have been calculated on the Roman calendar, after a 24-hour span, which would make the first day of Saturday the second day of Sunday the 3rd day on Monday Roman calendar. The first night Friday the 2nd night Saturday the 3rd night Sunday Roman calendar so he couldn't have Rose early Sunday morning. It would have to be early Monday morning.
As with the Israelites of those times the Byzantine calendar the year would be different, when the Day begin but not the 24-hour day.