From the same 1599 Geneva Bible, and a look into their view of Revelation 11:3
3 But [a]I will give power unto my two witnesses and they shall [b]prophesy a thousand two hundred and threescore days, clothed in sackcloth.
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Footnotes
Revelation 11:3 I had rather translate it illud than illam, the Temple than the city: for God saith, I will give that Temple, and commit it unto my two witnesses, that is unto the Ministers of the word, who are few indeed, weak and contemptible: but yet two, that is, of such a number as one of them may help another, and one confirm the testimony of another unto all men, that from the mouth of two or three witnesses every word may be made good amongst men, 2 Cor. 13:1.
Revelation 11:3 They shall exercise their office enjoined by me by the space of those thousand two hundred and sixty years, in the midst of afflictions though never so lamentable which is figuratively showed by the mourning garment.
Back in 1599, some saw the 1260 as years like you do.
——>Back in 1599, some saw the 1260 as years like you do.
Not just some, but all. It was the Reformer’s position, as made clear to them from the bible/prophecy. Same applies to who they believed was the Antichrist. According to prophecy there is only one possible answer.
Romanism and the Reformation
H. GRATTAN GUINNESS
https://www.whitehorsemedia.com/docs/romanism_and_the_reformation.pdf