Regarding Jesus, most Christians observe Good Friday, Low Saturday, and Resurrection Sunday. Scripture tells us that Jesus died at 3 p.m. (1500 hours) ( Matt. 27:45-50, Mark 15:33-37; Luke 23:44-46 ). The women went to His tomb to anoint Him. They arrived just before sunrise “on the first day of the week” i.e., Sunday ( Matt. 28:1; Mark 16:2, 9; Luke 24:1, John 20:1 ). Again, let us name 6 a.m. (0600 hours) as sunrise. Since the women arrived just before sunrise, let us propose it was as late as 5:59 a.m. (0559 hours). From Friday at 3 p.m. (1500 hours) to Sunday sunrise at 5:59 a.m. (0559 hours) also is 39 hours, less a minute.
The Gentle Browser is invited to check our math. Notice that we have sought the maximum number of hours (39 hours). It could have been less. That’s a bit of a problem, because Jesus said “three days and three nights” ( Matt. 12:40 ). That’s 72 hours, not 39 hours.
As a child, your host was told that two “brights” (part of Friday, all of Saturday), plus two “darks” (Fri/Sat overnight, Sat/Sun overnight), plus one “both” (sunrise Sunday) counted as three days and three nights. As a child, your host was told by another teacher that a 24-hour clock running on modern time can be divided into three days and three nights.
A small but vocal minority argue that Jesus died on Good Wednesday, not Good Friday. Their argument is:
• The Jewish day runs from sunset to sunset, because “the evening and the morning were the nth day” ( Gen. 1:5, 8, 13, 19, 23, 31 ).
• The first month of the Jewish year was called Abib ( Exod. 23:15, 34:18; Deut. 16:1 ).
• Later, that same first month was renamed Nisan ( Esth. 3:7 ).
• The Passover is to be observed on the 14th day of the first month (i.e., Nisan) of the Jewish year ( Exod. 12:18; Lev. 23:5; Num. 9:1-3, 28:16 ).
• The Feast of Unleavened Bread following the Passover is to be observed for seven days ( Exod. 12:15, 18, 34:18; Lev. 23:6; Num. 28:17 ).
• Therefore, The Feast of Unleavened Bread following Passover is to be observed from 15 Nisan through 21 Nisan.
• The lamb is to be slaughtered “in the evening” of the Passover, on 14 Nisan ( Exod. 12:6; Deut. 16:2, 6; Mark 14:12; Luke 22:7 ).
• Jesus was and is the Lamb of God ( Exod. 12:5, 46; Numb. 9:12; Psa. 34:20; Isa. 53:7; John 1:29, 13:1, 19:36; Acts 8:32-35; 1 Cor. 5:7; 1 Pet. 1:19; Rev. 5:6, 13:8 ).
• Most Gentile Christians know only of the weekly Sabbath: the day of rest. In Judaism, that day runs from Friday sunset to Saturday sunset ( Gen. 2:2-3, Exod. 20:8-11, 23:12, 34:21; Deut. 5:12-15; Isa. 58:13 ).