I looked at my phone before posting the ‘yesterday’ and it showed Nov 11 something. That was the hour not the date, so yep, I screwed up.
And before you point out that it was after twelve when I posted. This phone time is more than 15 minutes slow, so it really was in hour 11 according to it.
(No, I can’t change the time, it’s controlled by a central computerized phone system somewhere in the building.)