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).
Millerism
The Millerites were the followers of the teachings of William Miller, who in 1833 first shared publicly his belief that the Second Advent of Jesus Christ would occur in roughly the year 1843–1844. Coming during the Second Great Awakening, his beliefs were taken as predictions, spread widely, and were believed by many, leading to the Great Disappointment.