Always been night. Except problem two, 26 27 hour days. I heard of studies, French, where people lived deep in caves without clocks. Within a short time all started living near a 26 hour day. I do not remember the exact time, but it seems they all grouped very close.
So everyday I get up two hours later, and every twelve days? complete a cycle. It could be 14, and half a Lunar cycle. Not everyone hears a sundial.
I am a hermit, so most of the time I can be just living.
Some do seem to be Solar time, waking at dawn, like plants.
The world is running on factory time, has been for a hundred years, which like church bells I find unnatural. Besides, the factories have been sent to China. Everyone does have to be there to run a factory, but it has little to do with IT where the job runs 24/7.
We should come up with more ways to look at this. Farmers of old lived a year cycle, intense work at planting and harvest, summer low work and long days, and hibernate for winter.
Factory time put everyone on 9 to 5, all year, the electric era made it possible, and then came an epidemic of cancer. Could it be that natural cycles have something to do with body repair?
As the world moved to two shifts, and I am old enough to remember when all shopping was done by five, or waited to tomorrow, and stayed open on weekends, remember Blue Laws, Thou Shalt not on Sunday, spreading the work load, cancers started declining. As work has moved to the web, with flex time, it has continued to drop. The cure for cancer, rare 200 years ago, is smash the clocks, sleep when you will, work when you will, and live within the cycle of your own body.