Maybe I should remove the non-PST times from the subject as it's all rather opaque. I think part of it is that summer time has already ended in the US(? I think) but it's still a thing in Europe; but I've seen this before, as mentioned, and it's just ended up totally confusing everybody. And it's still a Steam feature. D:
But I have been up since 10:30pm last night (UK time) and I'm zonked so whatever time it lands, I'll be asleep (well, in theory).