Exact same here for all your paragraphs. Perhaps even closer to 26 hours. And during the same time of a couple of months without any obligation at all that you

Exact same here for all your paragraphs. Perhaps even closer to 26 hours. And during the same time of a couple of months without any obligation at all that you described, I found out that I should skip one 'night' (if I may call it so, let's rather say a sleeping period) every 7-10 days, to 'resynchronise' a bit with the classical day. Because you sometimes have to go shopping, see someone, do a bit of gardening work in the daylight, etc. :-)