Researchers believe that Jesus, as described in the New Testament, was crucified on Friday April 3, 33 A.D.

This is very interesting as it just confirms what we already know.

In terms of textual clues to the date of the crucifixion, Williams quoted a Nature paper authored by Colin Humphreys and Graeme Waddington. Williams summarized their work as follows:

• All four gospels and Tacitus in Annals (XV,44) agree that the crucifixion occurred when Pontius Pilate was procurator of Judea from 26-36 AD.
• All four gospels say the crucifixion occurred on a Friday.
• All four gospels agree that Jesus died a few hours before the beginning of the Jewish Sabbath (nightfall on a Friday).
• The synoptic gospels (Matthew, Mark, and Luke) indicate that Jesus died before nightfall on the 14th day of Nisan; right before the start of the Passover meal.
• John’s gospel differs from the synoptics; apparently indicating that Jesus died before nightfall on the 15th day of Nisan.

Quoted from here.