It does not say 7 year tribulation in the text of Daniel 9:27. It does not say great tribulation in the text of Daniel 9:27 either.
The great tribulation begins when the abomination of desolation is standing in the holy place spoken of by the prophet Daniel. Information of when that will be during the 7 years is by deduction - by subtracting, day 2520 (7 years) minus 1335 days = day 1185.
Therefore, from day 1 of the confirming of the covenant - on day 1185, the great tribulation will begin will lasts 1335 days.
The tribulation period of time comes from the 70 weeks prophecy in Dan.9:27. Review the following. Your reference to 1335 days is out of context and properly described in Dan.12.
Seventy Weeks Are Determined Upon Thy People!
The following is a complete analysis Of the amazing prophecy found in the book of Daniel. We will begin in Dan.9:24 where the angel Gabriel is giving this prophecy to Daniel, the prophet.
"Seventy weeks are determined upon thy people and upon thy holy city, to finish the transgression, and to make an end of sins, and to bring in everlasting righteousness, and to seal up the vision and the prophecy, and to anoint the most Holy."
1. Referrence here is to what God has decreed upon Daniel's people, Israel. [It has nothing at all to do with the church!]
2. See Gen.29:27 to explain that this biblical term of "one week" equals seven years. So the 70 weeks here, represents a total of 490 years, or 7 X 70.]
Vs.25. "Know, therefore, and understand, that from the going forth of the commandment to restore and to build Jerusalem unto the Messiah, the Prince, shall be seven weeks, and threescore and two weeks; [49 + 420 + 14 = 483 years, covering 69 of the 70 weeks,] the street shall be built again, and the wall, even in troublous times." [See Neh.2:1-8.]
According to Sir Robert Armstrong, of the Royal Observatory, Greenwich, England, the exact date of King Artaxerxes, of Persia, gave the decree for some of the Israeli exiles to return to Jerusalem on March 14, 446 BC.
[From 446 B.C. to Messiah the Prince, in Dan.9:25, equates into 69 Weeks, or 483 years, leaving the 70th and final Week of 7 years yet to be fulfilled].
From the 69 weeks [Of years] from above, or 483 years, multiplied by the 360 days of the Hebrew year, equals 173,880 days.
Vs.26. "And after threescore and two weeks..."
[Which followed the first 7 weeks, or 49 years of vs 25, referring to the dedication of the completed building of the city and walls of Jerusalem, in the 32nd year of the Persian king, Artaxerxes, in the 7th month, [Neh.5:14 and 8:1] leaving 62 more weeks, or 434 more years [For a total of 69 weeks, or 483 years] to the triumphant entry of Jesus into Jerusalem]. Culminating in a total of 69 weeks, or 483 years from the Persian King, Artaxerxes Decree on March 14th, 446 BC. and the people of the prince that shall come shall destroy the city and the sanctuary, and the end of it shall be with a flood, and unto the end of the war desolations are determined."
After Jesus was crucified, the Roman [prince] Titus comes with his legions and destroyed Jerusalem and the second temple in 70 AD, after bitter fighting, scattering Israel and the Jewish people into their diaspora.
To establish the time Jesus began His ministry, and approximate age, we find the evidence in Luke 3:1 and 3:23.
Lk.3:1. "Now in the fifteenth year of the reign of Tiberius Caesar, Pontius Pilot being governor of Judaea, and Herod being tetrarch of Galilee, and his brother Philip, tetrarch of Ituraea and of the region of Thrachonitis and Lysanias, the tetrarch of Abilene, Annas and Caiaphas being the high priests, the word of God came unto John, the son of Zacharias, in the wilderness."
Which brings us to 29 AD and Jesus is about 30 years of age.
Lk.3:23. "And Jesus Himself began to be about 30 years of age, [When all Jewish priests begin their priesthood.]being [as was supposed] the son of Joseph, who was the son of Heli,"
Back to Daniel's prophecy of 70 weeks of years decreed upon his people, for a moment. We have determined as we fast close on all of the 69 weeks, 483 years, and 173,880 days in the Hebrew 360 day year as to exactly where it will take us.
Jn.12:12-13. "On the next day many people that were come to the feast, when they heard that Jesus was coming to Jerusalem, Took branches of palm trees and and went forth to meet Him, and cried Hosanna! Blessed is the King of Israel, that cometh in the name of the Lord." April 6th 32 AD. [According to the Royal Observatory, Greenwich, England.]
Exactly 173,880 days from King Artaxerxes of Persia, decree of March 14,446 BC. [From Neh.2:1-8. Based on the 360 day Hebrew year. Which makes no difference whatever from a 365.2425 day year, when all the necessary corrections are made].
360 X 483 = 173,880 days.
1. 32 years [AD] X 365 days in our year = 11,680 days.
2. 445 years [BC] X 365 days in our year = 162,425 days.
3. Total 174,105 days divided by 365 = 477 years.
4. Plus 24 days between the date of the decree in 445 BC and Jesus cut-off in 32 AD = 477 years, 24 days
5. Subtract one year because there is no year zero between 1 BC and 1 AD. = 476 years, 24 days.
6. 476 years X 365 days = 173,740 days +24 = 173,764 Days
7. Add days of the leap years over 476 years. Divided by 4 = 119 days = 173,883 days
8. Subtract 1/128 Calendar year day for every solar year: Leap year omitted every 128 years.= -3 days = 173,880 days!
Which reveals the 360 day prophetic year of Israel is the very same as our present 365.2425 day year when all the corrections have been made to the latter.
The 70th week of Daniel's prophecy, of the final 7 years, is the Tribulation, or Jacob's Trouble [Jer.30:7.] which will conclude the 490 year prophecy decreed upon his people, with a 2,000 year parenthetic in between, that covers the entire church age!
Dan.9:27. "And he shall confirm the covenant with many for one week; and in the midst of the week he shall cause the sacrifice and the oblation to cease, and for the overspreading of abominations he shall make it desolate, even until the consummation, and that determined shall be poured upon the desolate."
Quasar 92