These people really do think they are gods themselves don’t they. How about this: A day begins at noon when the sun crosses the local celestial meridian and lasts until the next time the sun crosses the local celestial meridian, exactly 24 hours later.
It takes me about 2 or even 3 weeks to quit staggering around in the morning after setting the clocks ahead in the spring. Setting them back is not quite as disconcerting but almost. Maybe because I live where there are no street lights, very large lots, no city lights of any kind, my body/mind are much more attuned to the sun.
In fact we had some guests, a husband and wife and 2 kids, here a couple of years ago, they slept in a camper for a few nights. They were from a big city. IN the morning after the first night, the husband told us he woke up in the middle of the night and couldn’t see anything at all (no moon that night) and for a minute or two he seriously thought he had gone blind! We had a good laugh...