Why don't you take some time to study the matter instead of turning Scripture on its head? The ministry of Christ was an ESTIMATED three and one half years. But the reign of the Antichrist is NOT estimated. It is precise.
And there was given unto him [THE ANTICHRIST] a mouth speaking great things and blasphemies; and power was given unto him to continue forty and two months. (Rev 13:5)
42 months = 1260 days = 3 1/2 years = time, times, and half a time.
This corresponds with (1) the ministry of the two witnesses and (2) the preservation of the believing remnant in the wilderness.
But the court which is without the temple leave out, and measure it not; for it is given unto the Gentiles: and the holy city shall they tread under foot forty and two months. And I will give power unto my two witnesses, and they shall prophesy a thousand two hundred and threescore days, clothed in sackcloth. (Rev 11:2,3)
1000 + 200 + 3 x 20 = 1260 days = 3 1/2 years
And to the woman were given two wings of a great eagle, that she might fly into the wilderness, into her place, where she is nourished for a time, and times, and half a time, from the face of the serpent. (Rev 12:14)
TIME = 1 YEAR, TIMES = 2 YEARS, HALF A TIME = 6 MONTHS. TOTAL 3 1/2 YEARS.