A common misinterpretation in Christian scholarship of a statement made in Matthew 24:36: But of that day and hour knoweth no man is that there is absolutely no way anyone can have any way of knowing any thing about the time of the second coming. Usually it's because of a failure to understand the writings of the new testament from a cultural and historical perspective. In the time of Jesus, the governing religious body called the Sanhedrin would announce the new moon, which marked the beginning of the next month, after two reliable witnesses confirmed seeing it. The day and hour which no man knows in advance is the new moon, and hence Jesus was speaking an idiom which the people of his day understood.
The appointed time which foreshadows the Second Coming of Jesus Christ is Yom Teruah, found in Leviticus 23. It says Speak unto the children of Israel, saying, In the seventh month, in the first day of the month, shall ye have a sabbath, a memorial of blowing of trumpets, an holy convocation. Of all the appointed times Israel was commanded to rehearse, Yom Teruah was the only one that was commanded to start on the first of the month. A common theme in all of the passages discussing the Second Coming is the sounding of the trumpet. Matthew 24:31 and 1 Thessalonians 4:16 are the most quoted.