It’s not a day off, but the Dutch have a new holiday on the birthday of deceased Salvation Army Major Alida Margaretha Bosshardt on 8 June. On this day an award named after her will be given to people who have a made a difference in Dutch society, according to the association Nederland Positief (Positive Netherlands). Although she was known as a Major, her rank was Lieutenant-Colonel. She was known for many good deeds including helping Jewish children during the German occupation and her work with Amsterdam prostitutes. I met her once and she was very friendly. I am surprised she gets a holiday and so are my sources.
(Link: rtl.nl)