I found a difference in Mr. Irlmaier's timing compared to others' observations.
Mr. Irlmaier said that
1. there will be snow on the mountains
2. they throw the yellow poison in a very cold night

That does not match with July. Of course, there had been snow in July before, I remember, as a child, the Alps were white in July during a very cold summer.
But if the summer is so cold then the wheat cannot not be gathered in July, as some say that it starts when the wheat is ready.

And given the fact that his words were twisted and altered, we know as much as before - nothing.

.