Prewrath
According to prewrath, this passage clearly indicates that the coming of the Lord and the Day of the Lord are part and parcel of the same event, the coming of the Lord. First, Jesus arrives in the sky at His Second Coming, at which time He raptures all Christian believers, then His judgment during the Day of the Lord falls upon those who have disbelieved and rejected His lordship.
This is justified, according to prewrath, by the fact that Jesus places His return (Matthew 24:30–31) after the abomination of desolation (Matthew 24:15), which occurs at the midpoint of the 70th Week (cf. Daniel 9:27, Daniel 11:31). Thus, if the Second Coming and rapture occur after the sixth seal, this places this event after the midpoint but before the end (seventh trumpet).
Futurism (Christianity)
According to some Dispensationalists who hold the futurist view, the Tribulation is thought to occur before the Second Coming of Jesus and during the End Times. Another version holds that it will last seven years in all, being the last of Daniel's prophecy of seventy weeks. This viewpoint was first made popular by John Nelson Darby in the 19th century and was recently popularized by Hal Lindsey in "The Late Great Planet Earth". It is theorized that each week represents seven years, with the timetable beginning from Artaxerxes' order to rebuild the Temple in Jerusalem (the Second Temple). After seven plus 62 weeks, the prophecy says that the messiah will be "cut off", which is taken to correspond to the death of Christ. This is seen as creating a break of indeterminate length in the timeline, with one week remaining to be fulfilled.