Livitcus 23:5
"On the fourteenth day of the first month at twilight is the Lord's Passover."
PASSION WEEK - all days begin and end at twikight (sunset)
Thursday Nisan 1
Saturday Nisan 10 Jesus rides into Jerusalem on donkey
Sunday Nisan 11
Monday Nisan 12
Tuesday Nisan 13 Fourth day of lamb inspection
Wednesday Nisan 14 Passover crucifixion Jesus placed in tomb before twilight when Sabbath begins
Thursday Nisan 15 1st day of Feast of Unleavened Bread Sabbath and day #1 Jesus in tomb
Friday Nisan 16 2nd day of Feast of Unleavened Bread and day #2 Jesus in tomb
Saturday Nisan 17 3rd day of Feast of Unleavened Bread Sabbath and day #3 Jesus in tomb
Sunday Nisan 18 Jesus resurrection after three days in tomb