The Lord's hour of trial will begin with His wrath and will end 7 years later at His appearing. The careful reader will note the distinct differences between Revelation 6:12-17 and Matthew 24:29-31 :
Beginning - Revelation
The beginning of the tribulation of those days [note 6:17]
Earthquake [note 8:5]
Darkness caused by the destruction on the earth [note 8:7-13]
Stars [fallen angelics] falling to the earth [note 9:1-21, 12:4,9]
Humans intransigent attitude and their hiding from the Lord's coming wrath [note 8:7-13, 9:1-21, 16:1-21]
No sign of the Son of Man
Earth dwellers do not see Him
No gatherings
Ending - Matthew
After the tribulation of those days [note 24:29]
No earthquake [note Revelation 16:18 and Ezekiel 38:19. This quake at Armageddon will occur just before the end of the tribulation]
Darkness caused by the cosmic disturbances. [note 24:29]
Stars [cosmic] falling because of the cosmic disturbances [note 24:29]. Not to the earth .... just one would obliterate the earth.
Sign of the Son of Man appears [note 24:39]
Earth dwellers see Him [note 24:30]
Humans mourn when they see Him [note 24:30]
Gatherings of the mortal elect of Israel and the nations that are left [note 24:31, 25:31]
Beginning - Revelation
The beginning of the tribulation of those days [note 6:17]
Earthquake [note 8:5]
Darkness caused by the destruction on the earth [note 8:7-13]
Stars [fallen angelics] falling to the earth [note 9:1-21, 12:4,9]
Humans intransigent attitude and their hiding from the Lord's coming wrath [note 8:7-13, 9:1-21, 16:1-21]
No sign of the Son of Man
Earth dwellers do not see Him
No gatherings
Ending - Matthew
After the tribulation of those days [note 24:29]
No earthquake [note Revelation 16:18 and Ezekiel 38:19. This quake at Armageddon will occur just before the end of the tribulation]
Darkness caused by the cosmic disturbances. [note 24:29]
Stars [cosmic] falling because of the cosmic disturbances [note 24:29]. Not to the earth .... just one would obliterate the earth.
Sign of the Son of Man appears [note 24:39]
Earth dwellers see Him [note 24:30]
Humans mourn when they see Him [note 24:30]
Gatherings of the mortal elect of Israel and the nations that are left [note 24:31, 25:31]