I believe Daniel’s time of the “end” is the same thing as the “day of the Lord” other prophets mention. Christ also uses the term in a specific way in the Olivet Discourse in answer to His disciples’ questions about the “end.” Christ specifically references Daniel when mentioning the abomination of desolation.
It is important to distinguish certain prophetic events: Daniel’s seventieth week, the beginning of sorrows, the Great Tribulation, the Day of the Lord / the End.
The Great Tribulation begins when Satan is cast out of Heaven by Michael in the middle of Daniel’s seventieth week. At that time, the antichrist will proclaim himself to be God and force the world to worship him. He will launch the greatest persecution of God’s people in history, but his efforts will fail because of God’s supernatural intervention, culminating in signs in the heavens, forcing all of the inhabitants of the world to take shelter underground. Christ will then gather His elect and unleash an ever-increasing sequence of judgments, mostly by fire, on those who remain on the earth. This is the second coming and the Day of the Lord.
The signs in the heavens, including the return of Christ, mark the end of the Great Tribulation and the onset of the Day of the Lord. These signs clearly take place at the end based on the Olivet Discourse. But they also fulfill Joel’s prophecies which show these same signs must happen BEFORE the Day of the Lord.
That the Day of the Lord is distinct and separate from the Great Tribulation is also supported by the fact that the antichrist exalts himself during the Great Tribulation, but in the Day of the Lord, only the Lord will be exalted.
While there are many things difficult to be understood in prophecy, it’s practical application is very important. We must watch expectantly AND wait patiently for Christ’s return. When we understand that persecution is normative for Christians, we can see how it is also to be expected that we will face the antichrist before Christ’s return. Those who are convinced otherwise may have their faith shaken when their expectation of Christ’s return to happen first (being taken out of the world before these things happen) turns out to be incorrect.
God gave Paul revelation of a snarching away of those who are born again / have been born again. [ 1 Thess 4:13-17, 2 Thess 2-5, and 1 Corinthians 15:52 and following ] This group of people are 'the Bride of Christ', the Body of Christ. There are Biblical reasons for the Rapture of the Ekklesia. A couple are, 1) to remove those regenerated individuals who are alive in Christ (or the deceased who were in Christ and died), and 2) to reveal Messiah to a group of 144,000 JEWS who will spearhead the final evangelization of all humankind but especially the alive Jews.)
The seven years of tribulation are GOD'S dealing with Israel and those upon the Earth who have rejected The Grace of God in Christ, an age during which those 'in Christ' are supposed to be doing the evengelizing.
During the seven years it is Jews who will be doing the evangelizing, because JESUS is coming in the air to snatch away His Bride before GOD begins pouring our His wrath in ever increasing degrees during the seven years.
Those for whom God is coming to snatch away have been told to be ever ready to leave because there are no prophetic markers which will herald His command to ‘come up hither’. The Great and Terrible Day of The Lord, on the other hand, is hallmarked by several signs of it arriving.