Ted's Response:

There are reasons why I am convinced that Jesus rose from the dead sometime after sunset following Saturday (at which time the dark hours of Sunday began) and before dawn on Sunday:

• Mark states, "When Jesus rose early on the first day of the week..." (Mark 16:9), which was Sunday.
  
  
• Leviticus 23:3 indicates that the seventh day of the week is the Sabbath. Leviticus 23:9-14 describes the celebration of firstfruits, and the specific day for this to occur is seen to be the day after the regular Sabbath (23:11), making it be the first day of the week. Jesus fulfilled the four Spring feasts/festivals (Passover, Feast of Unleavened Bread, Feast of Firstfruits, and Shavuot) at His first coming and soon after His resurrection. As the firstfruits from the dead (1 Corinthians 15:20,23), Jesus fulfilled the Feast of Firstfruits by rising from the dead on that day.
  
  
• Leviticus 23:15 reiterates that, during the week of the Feast of Unleavened Bread, the day after the (regular weekly) Sabbath/Saturday (that is, the day of the Feast of Firstfruits) would begin a 50-day count, ending on the day after the seventh (regular weekly) Sabbath/Saturday (23:16). This fiftieth day, on which the Feast of Weeks or Shavuot fell, being the day after the Sabbath, also was on the first day of the week: Sunday. This was the day of Pentecost (which is an indication of fifty or fiftieth), on which the Holy Spirit (led and directed by the risen Lord Jesus) came upon all the Jews gathered in one place (Acts 2:1-4)—see gifts of the Holy Spirit.
  
  
• "Now on that same day [the first day of the week—Luke 24:1], two of them were going to a village called Emmaus..." (Luke 24:13). Jesus came and walked along with them, asking them questions and getting them to talk about the events that recently had happened to Jesus, including the crucifixion (24:19b-21a). They said, "And what is more, it is the third day since all this took place" (24:21b). If they said this to Jesus on the first day of the week, and we count back three days, we get back to Thursday (not Wednesday or Friday) as His crucifixion day.

Paul said,

But Christ has indeed been raised from the dead, the firstfruits of those who have fallen asleep. For since death came through a man, the resurrection of the dead comes also through a man. For as in Adam all die, so in Christ all will be made alive. But each in his own turn: Christ, the firstfruits; then, when he comes, those who belong to him. (1 Corinthians 15:20-23)

The Feast of Weeks, also known as Shavuot or Pentecost, was to take place seven weeks following the Feast of Firstfruits:

From the day after the Sabbath, the day you brought the sheaf of the wave offering, count off seven full weeks. Count off fifty days up to the day after the seventh Sabbath, and then present an offering of new grain to the LORD. From wherever you live, bring two loaves made of two-tenths of an ephah of fine flour, baked with yeast, as a wave offering of firstfruits to the LORD. (Leviticus 23:15-17)

Some calendars, though, will show Shavuot and/or Pentecost to be on a day of the week other than Sunday, which is incorrect. This is because they begin the 50-day count the day after the first day of the Feast of Unleavened Bread, a special Sabbath, rather than the the day after the weekly Sabbath during that week. Of course, the day after the regular weekly Sabbath always is a Sunday.