The 70th week of years will end when the Heavenly court passes judgment to consume and destroy Antichrist’s kingdom.
But the judgment shall sit, and they shall take away his dominion, to consume and to destroy [it] unto the end. (Daniel 7:26)
Some other indications are listed in these verses.
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 make reconciliation for iniquity, and to bring in everlasting righteousness, and to seal up the vision and prophecy, and to anoint the most Holy. (Daniel 9:24)
And I heard the man clothed in linen, which [was] upon the waters of the river, when he held up his right hand and his left hand unto heaven, and sware by him that liveth for ever that [it shall be] for a time, times, and an half; and when he shall have accomplished to scatter the power of the holy people, all these [things] shall be finished. (Daniel 12:7)