Matthew 24

44 Therefore you also be ready, because the Son of the Man is coming at an hour that you do not suppose.*I take it that for there to be the element of surprise the Rapture of the Church must occur before the "abomination of desolation". When the Antichrist takes his place in the Holy of Holies and declares himself to be god there will be precisely 1,290 days until the return of Christ to the earth. "An hour that you do not suppose" presumably requires a pre-‘abomination’ rapture—if the rapture is pre-wrath but post-abomination, only a fool will be taken by surprise, unless the Rapture happens immediately after the ‘abomination’ (2 Thessalonians 2:3-4). For a fuller discussion of this question, please see the Appendix: Before or after?