18 November. International Men's Day. No mistake. Not much publicity either

Hurray! Today is International Men's Day! This was revealed by BBC Radio 4 "Today" in an item on prostate cancer (which I have). Some years ago I complained on Twitter that while there is an International Women's Day there is no International Men's Day. Only to be informed that there is, and that it is on 19 November. I never heard of any mention of it, but naturally I've long thought it to be on 19 November. Until now. 1975 was International Women's Year. But there has never been an International Men's Year. Of that I'm sure.