On the dating of the sixth trumpet

I've dated the sixth trumpet at 2003, because it's closer to 2004, which was a symbolic year like 1540, ushering in a new era. But the sixth seal occurred between at least 1531 and 1539, and so it might be permissible to allow for the sixth trumpet to have occurred between 1990, when the First Iraq War started, and 2003, when the Second Iraq War effectively ended.

For, if we use 1990 as the year of the sixth trumpet alongside 1066 as the year of the first seal, we get some very exact equations, that is

1990 - 1066 = 924
924 : 11 = 84
84 : 2 = 42
84 : 24 = 3.5

42 is the difference between 1581, the date of the first trumpet, and 1539. It is thus the half hour during which the 144000 Jews were sealed.

The length of an hour at that point hence was 84 years. And all the seals and trumpets would have occurred in 11 hours precisely (leaving out the seventh seal, because it is an envelope, and the seventh trumpet, because it is postponed until after the third vial.)

But then the days were shortened. And if we assume that a day would be naturally shortened to an hour, then the original hour of 84 years would be shortened to an hour of 3.5 years.

It could not possibly get any neater than that, especially in light of 84 years being the closest multiple of seven (the number of years traditionally understood as a stage of life) to the span of a full human life.

So, the original hour was a man's lifetime. And counting like that, we are now in the twelfth iteration.

However, if we go back in time from 1066 by twelve hours, we arrive in the year 58 A.D., the most likely candidate in light of

And there are seven kings: five are fallen, and one is, and the other is not yet come.

for the year in which the Revelation was received, counting Caesar, Augustus, Tiberius, Caligula, Claudius and Nero.

In other words, it had to dawn first (following the Jewish convention of starting a day at dusk), before the seals were being opened, and we are now in the last hour of the day.