A further rewording of the OP may make it a bit more clear. The Messiah said that 3 night times would be involved with His time in the "heart of the earth". However, there are those who believe that the Messiah died on the 6th day of the week and who think that the "heart of the earth" is referring to the tomb or at the earliest to the time between the leaving of His spirit from His body and His resurrection on the 1st day of the week. But this belief allows for only 2 night times to be involved. To reconcile this discrepancy some say that the Messiah was using common Jewish idiomatic language. I am simply asking for examples to support that assertion; i.e., instances where a daytime or a night time was forecast to be involved with an event when no part of the daytime or no part of the night time could have occurred. But in order to say that it was common, one would have to know of other instances where the same pattern had to have been used. I am simply looking for some of those instances, scriptural or otherwise. So far no one has come forth with any.