When we look at the 7 feasts of Israel and their prophetic meaning, we see that Jesus has fulfilled the first 4 feasts (Passover, Unleavened breads, First Fruits and Pentecost) in the exact day. Next feast on schedule is the Feast of Trumpets which represents the Rapture and, the consistency of the Bible would imply that the rapture has to occur in the exact day of the Feast of Trumpets. Does this mean that the rapture cannot take place in other days of the year?
I’m not an advocate of a Feast of Trumpets rapture for two reasons. First, the Feast of Trumpets is one of the Feasts of Israel, and Israel was never promised a rapture. The Rapture is an event unique to the Church, so there’s no reason for it to be fulfilled on the date of a feast intended for Israel. I believe the Second Coming is a much more likely fulfillment of the Feast of Trumpets.
Second, from my studies of Romans 11:25 and Acts 15:13-18, I’ve become convinced that the rapture will come on the day when the church has reached it’s full number, no matter what day that happens to be. Therefore I think the rapture can happen on any day.