How are 3 days/nights in grave prophecy reconclied if Jesus died on Good Fri & arose Sun? Did Jesus die on "Good Friday"? If so, how is it that 3 days &amp; 3 nights are reckoned between Fri - Sun? 
“For as Jonah was three days and three nights in the belly of a huge fish, so the Son of Man will be three days and three nights in the heart of the earth” (Matthew 12:40).
A hebrew idiom - any part of a day or night constituted a full day per traditional Jewish teaching (and the Talmud).

So - Jesus died Friday before sundown (before the Sabbath) and was burried (1 day), Jesus remains buried Friday through Saturday sundown (2 day), Jesus is resurrected on Sunday morning ("on the third day" - which per the idiom is a day and night (a full day).

This actually is what harmonizes the verses which say Jesus arose "on the third day" with "three days and three nights".

Note: night is actually morning and morning is part of the day.


Friday day(12am - 6pm) and Friday evening(6pm - 12am) = 1st day
Saturday morning(12am - 6am) and Saturday day(6am - 12am) = 2nd day
Sunday morning(12am - 6am) and Sunday day is part of the morning(12am - 12am) = 3rd day