Matthew 12
40   For as Jonas was three days and three nights in the whale's belly; so shall the Son of man be three days and three nights in the heart of the earth.

According to all four Gospels, the crucifixion took place on a Friday and the resurrection on the following Sunday. From this it would seem that Jesus was buried for three days (Friday, Saturday, Sunday).   Luke writes that according to prophecy, Yehoshua was to rise on the third day.

Luke 24
45   Then opened he their understanding, that they might understand the scriptures,
46   And said unto them, Thus it is written, and thus it behoved Christ to suffer, and to rise from the dead the third day:

While it is true that according to Jewish law part of the day is equivalent to a full day, Matthew's Yehoshua promised to be buried specifically for three days and three nights. By the use of the phrase "three days and three nights," Matthew's Yehoshua indicated that he expected to be buried for three consecutive periods between dawn and dark (day) and dark and dawn (night), or approximately seventy- two hours. The Scriptures employ the phrase "three days" in a more general sense than that expressed by "three days and three nights." For example, "three days" does not necessarily include the period of day or night at either the beginning or end of the total time to be indicated. When the phrase "three days" is meant to specifically include three days and three nights, and this is not evident from the text, it must be stated as such.

Esther 4
16   Go, gather together all the Jews that are present in Shushan, and fast ye for me, and neither eat nor drink three days, night or day: I also and my maidens will fast likewise;

When the phrase "three days and three nights" is stated, it includes either all three days and all three nights or can be deficient in only parts of a day or night at the beginning or end of the entire period, but never of a full segment of day or night out of twenty-four hours.

Yehoshua did not have to be buried exactly seventy-two hours, he did have to be buried at least on parts of three days and three nights. Yehoshua died on a Friday at the ninth hour, which corresponds to about 3 P.M. The claim is made that Yehoshua rose three days later, on a Sunday. This would mean that he was buried during the daylight hours of three different days. If this was true, he was buried for only two nights.

The Gospel of John indicates that Yehoshua's promise to rise after being buried three days and three nights was never fulfilled.

John 20
1   The first day of the week (Sunday) cometh Mary Magdalene early, when it was yet dark, unto the sepulchre, and seeth the stone taken away from the sepulchre.

John says that Yehoshua, having risen before the dawn of Sunday morning, was buried for only two days and two nights, -- one full day (Saturday), part of another (Friday), and two nights (Friday and Saturday nights).

There is another way to calculate this, but it is even less generous.

Genesis 1
5 And God called the light Day, and the darkness he called Night. And the evening and the morning were the first day. (It takes an evening and a morning to make a day)

Leviticus 23
32 It shall be unto you a sabbath of rest, and ye shall afflict your souls: in the ninth day of the month at even, from even unto even, shall ye celebrate your sabbath. (This is to merely show that a full day is counted from one even to the next even. Even being evening.)

This would make Friday evening and Saturday morning, one day, and Saturday evening.... well, it would stop there, because according to John: Mary Magdalene went to the sepulchre early, when it was still dark. So you would get a day and a half at best.

This contradicts the assertion that in fulfillment of prophecy, Jesus was buried three days and three nights. The New Testament evidence simply does not add up to three days, (daylight hours), and (three nights), as specifically promised by Yehoshua.

Plus:

Matthew 27
51   And, behold, the veil of the temple was rent in twain from the top to the bottom; and the earth did quake, and the rocks rent;
52   And the graves were opened; and many bodies of the saints which slept arose,
53   And came out of the graves after his resurrection, and went into the holy city, and appeared unto many.

The Jewish historian Flavius Josephus, writing during the second half of the first century AD, produced two major works: History of the Jewish War and Antiquities of the Jews, and he had not one word to say about this most extraordinary occurrence. Fifty days after the alleged event, Peter was giving a speech recorded in Acts 2, but said nothing about the saints rising. Paul, who spoke at great length (1 Corinthians 15) to convince his listeners that Yehoshua's resurrection had occurred, had nothing to say about it either.

The appearance of these bodies "unto many" must have been the sensation of a lifetime for the residents of Jerusalem. If this remarkable event actually happened, why did only Matthew report it? About twenty percent of the gospels is repetition so it is not as if New Testament writers did not like to repeat what others have written; repetition of the most mundane events occurs everywhere, so why didn't Mark, Luke, John, Peter, or Paul write about the dead bodies of the saints marching through Jerusalem, appearing unto many?

Also, how come Matthew doesn't think we should know the names of the saints that rose from their graves? Why doesn't he tell us with whom the bodies of the saints met, and what they said--assuming they said anything, and where they went after their appearance unto the many? Did the bodies of the saints dutifully return to their graves after a polite visit, or did they remain for years among the residents of Jerusalem? Is there proof of veracity for this event that has so many unanswerable questions?