Here is an "article" from the website logosapologia which may explain the claim better than I could.
If you have ever spent any time studying Daniel’s seventy-weeks prophecy you might have been somewhat annoyed by the first seven weeks.
“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: the street shall be built again, and the wall, even in troublous times.”(Da 9:25Open in Logos Bible Software (if available))
Frankly, it seems to just be dangling there without a purpose. Most prophecy teachers simply add the two together to make sixty-nine weeks without saying much about why it is “seven and threescore and two (62).” Well, this bothered Newton too. He explained the odd seven weeks as referring to the second coming, after a future restoration of Israel which had not yet occurred! He explained the verse in this way:
Know also and understand, that from the going forth of the commandment to cause to return and to build Jerusalem, unto the Anointed the Prince, shall be seven weeks.
The former part of the Prophecy related to the first coming of Christ, being dated to his coming as a Prophet; this being dated to his coming to be Prince or King, seems to relate to his second coming. There, the Prophet was consummate, and the most holy anointed: here, he that was anointed comes to be Prince and to reign. For Daniel’s Prophecies reach to the end of the world; and there is scarce a Prophecy in the Old Testament concerning Christ, which doth not in something or other relate to his second coming. If divers of the antients, as Irenæus, Julius Africanus, Hippolytus the martyr, and Apollinaris Bishop of Laodicea, applied the half week to the times of Antichrist; why may not we, by the same liberty of interpretation, apply the seven weeks to the time when Antichrist shall be destroyed by the brightness of Christ’s coming?
He puts the first seven in the future after the second rebuilding of Jerusalem. Jerusalem was reclaimed by Israel during the Six Days War in June of 1967. Recall that in the seventy-weeks paradigm, the “seven” is seven weeks of years which is (7 x 7) forty-nine years. T. W. Tramm explains a remarkable concurrence:
June 7, 1967 falls in the Hebrew year 5727, adding forty-nine prophetic years to this date we arrive in the Hebrew year 5776, which is 2015 on the Gregorian calendar. Interestingly, if one counts exactly forty-nine (360 day) prophetic years (17,640 days) from the June 7, 1967 date of Jerusalem’s recapture, we arrive at September 23, 2015—the Day of Atonement! Coincidence?[ii]
We verified this remarkable match but we also noted that if one counts 49 x 365 days for solar years, one lands in 2016 which corresponds nicely with historical approach of AD 756 the acceding of temporal power to the pope plus 1260 derived from Revelation 11:3Open in Logos Bible Software (if available). Although no man knows the day or hour, it is hard to ignore the remarkable preponderance of prophecy pointing to the period we have entered
ops it DOES still exists. 
