After much consideration, I have determined that Christ died on the Passover Friday which occurred on April 7, 30 AD in accordance with the Gregorian calendar. It has since been called Good Friday by Christians.
Christ celebrated the Passover, His Last Supper, with His disciples on the Jewish calendar’s 14th day of Nisan. The Passover was the first day of the Feast of Unleavened Bread which was celebrated between the 14th and 21st days of Nisan. Because the Jewish day runs from sunset to sunset, the Passover in 30 AD began on the Thursday evening before Friday, April 7th. Christ’s Passover celebration with His disciples on the evening before His death was recorded in Mark 14:12-26. That very next morning He was delivered to Pontius Pilate. He was hung on a cross at 9 AM. About noon, darkness cast its pall over the land until 3 PM when He ultimately yielded His spirit.
There is a difference of opinion as to whether the paschal lamb was originally sacrificed at twilight at the beginning of Passover or in the afternoon at the end of Passover. If at the beginning, then Passover was eaten in the evening on the 14th day of Nisan. If at the end, then Passover was eaten in the evening on the 15th day of Nisan. The Passover in 30 AD ran from sunset on Thursday to sunset on Friday. There is no doubt that Christ ate the Passover on Thursday evening because He died before sunset on Friday and rose from the dead on the third day which was Sunday. Therefore, the paschal lamb was originally sacrificed at twilight at the beginning of Passover. The ritual meal was then prepared and eaten in the evening on the 14th day of Nisan.