.
The final authority on matters of daytime and nighttime is the Lord himself.
He was actually living in Israel during crucifixion week. When Jesus was
here, days were, at the most, only 12 hours.
● John 11:9-10 . . Are there not twelve hours in the day? If anyone walks in
the day, he does not stumble, because he sees the light of this world. But if
anyone walks in the night, he stumbles, because the light is not in him.
Days divided into twelve equal periods of sunlight were regulated by
what's known as temporal hours; which vary in length in accordance with
the time of year. There are times of the year at Jerusalem's latitude when
this world's light consists of less than 12 normal hours of sun, and
sometimes more; but when Jesus was here; the official number of hours was
always twelve regardless.
I don't exactly know why the Jews of that era divided their days into twelve
equal periods of sunlight regardless of the seasons, but I suspect it was just
a convenient way to operate the government and conduct civil affairs;
including the Temple's activities (e.g. the daily morning and evening
sacrifices)
_