Nissan 15th as the date of the crucifixion was the first and more traditional. But that tradition started on the IV century and not in the I.
This theory is based on the fact that Jesus did celebrated Passover on the night of the 15th and was arrested the next morning still the 15th. It presumes that Jesus was crucified the very same day of His arrest.
The big problem with the 15th Nissan is that the Gospels clearly say that Jesus was crucified on a preparation day. Nissan 15th is not a preparation day but a Sabbath. In answer to that, it is say that the meaning of “preparation” is not Sabbath but Friday. That is correct in Modern Greek, but is not correct on I Century Greek.
Please notice also that it is not possible to have two consecutives preparation days. If the day before Saturday is also Sabbath – two consecutive Sabbaths – it will be only one preparation day before the first Sabbath. A preparation day is a day in witch Jew do a lot of works they can not do on a Sabbath.
This theory is based on the fact that Jesus did celebrated Passover on the night of the 15th and was arrested the next morning still the 15th. It presumes that Jesus was crucified the very same day of His arrest.
The big problem with the 15th Nissan is that the Gospels clearly say that Jesus was crucified on a preparation day. Nissan 15th is not a preparation day but a Sabbath. In answer to that, it is say that the meaning of “preparation” is not Sabbath but Friday. That is correct in Modern Greek, but is not correct on I Century Greek.
Please notice also that it is not possible to have two consecutives preparation days. If the day before Saturday is also Sabbath – two consecutive Sabbaths – it will be only one preparation day before the first Sabbath. A preparation day is a day in witch Jew do a lot of works they can not do on a Sabbath.