I'll be brief. Between the opening of the sixth and seventh seals is chapter 7 (KJV). Chapter 7 deals with the destiny of those who are protected. Then the seventh seal is opened in chapter 8, when the seven trumps begin sounding.
In Matthew 24, Yeshua describes the sounding of the trumps as follows:
29 Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken:
30 And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory.
31 And he shall send his angels with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other.
There appear markers dividing the "tribulation" from the much worse "wrath/woe". They are the appearance of the Messiah in the heavens (the day of the Lord), the sounding of the trumpets, and the transformation of those who are in Messiah (both the living and those in the grave).
Rev 11:15 Then the seventh angel sounded: And there were loud voices in heaven, saying, The kingdoms of this world have become the kingdoms of our Lord and of His Christ, and He shall reign forever and ever!
In the opinion of many who've studied this for many years, the above will likely occur on Tishri 1 (of the corrected calendar), Yom Teruuah (year unknown) - (fifteen days prior to the marriage supper of the Lamb).
>>In the opinion of many who've studied this for many years, the above will likely occur on Tishri 1 (of the corrected calendar), Yom Teruuah (year unknown) - (fifteen days prior to the marriage supper of the Lamb).<<
So we really will know the day? Its interesting to me that people seem to ignore some passages. Those on earth can well know the day of Christs return to conquer the enemies of Israel. The prophecy of Daniel is very specific about the number of days from the signing of the peace treaty until he anti Christ sets himself up in the Temple and then a specific number of days until the Lord returns to conquer. The not knowing the day or the hour is in reference to the rapture.
Trumpets were used to gather the Israelites and tell them to move. The last trumpet was a signal that the last tribe was to move out which meant the evacuation of that area was complete. Trumpets were not used only for feast days.