As opposed to all the times Christians thought in the past that the end was upon the world.
We even see from the New Testament seeming indication that the apostles thought the end was near coming. Perhaps even Jesus himself:
Matthew 10:23, Matthew 16:27-28, Luke 21:22
1 John 2:18, 1 Thessalonians 4:13-18
In addition, Christians have throughout history believed the end was near.
The present day idea that Jesus is coming soon seems to have been sparked by
John Nelson Darby, the Millerites, and
Ellen G. White: founder of
Seventh Day Adventism.
White founded the SDA church on the coattails of the Great Disappointment:
Great Disappointment - Wikipedia
John Miller had been wrong about the return of Christ, but White and her Adventist followers remained convinced the second coming was near.
After this 19th century wave of millenialism,
Charles Taze Russel founded the Bible Students, which was reorganized into the Jehovah's Witnesses movement.
The Jehovah's Witnesses
wrongly predicted the end of the world and events that were to herald the end a number of times before reworking their understanding into a gradual unfolding of Christ's coming.
In light of all this information- what is it about today's world and events that so strongly convinces apocalyptic-minded Christians the end is upon us?
Why do they think their understanding relating to the present time is correct, when others have been wrong?