Mari Lwyd is a wassailing folk custom found in South Wales. The tradition entails the use of an eponymous hobby horse which is made from a horse's skull mounted on a pole and carried by an individual hidden under a sheet.
The custom was first recorded in 1800.
Mari Lwyd was a tradition performed at Christmas time by groups of men who would accompany the horse on its travels around the local area, and although the makeup of such groups varied, they typically included an individual to carry the horse, a leader, and individuals dressed as stock characters such as Punch and Judy. The men would carry the Mari Lwyd to local houses, where they would request entry through song. The householders would be expected to deny them entry, again through song, and the two sides would continue their responses to one another in this manner. If the householders eventually relented, the team would be permitted entry and given food and drink.

A bandura is a Ukrainian, plucked string, folk instrument.
It combines elements of the zither and lute and, up until the 1940s, was also often referred to by the term kobza.
Early instruments had 5 to 12 strings and similar to the lute.
Perform by @vikyletka_derkach

The folkloric hero Cossack Mamay playing a bandura (early 19th century), National Art Museum of Ukraine

What do you think caused this dramatic disconnect between psychological time and the clock?
That’s a big question that I’ve been investigating for forty years. I believe that when you are surrounded by night—the cave was completely dark, with just a light bulb—your memory does not capture the time. You forget. After one or two days, you don’t remember what you have done a day or two before. The only things that change are when you wake up and when you go to bed. Besides that, it’s entirely black. It’s like one long day.

-Michel Siffre

Memories and the construction of time
Diseases ... Alzheimer's, ADHD, destruction of the past/history
Brain as a time machine

My sleep was perfect! My body chose by itself when to sleep and when to eat. That’s very important. We showed that my sleep/wake cycle was not twenty-four hours, like people have on the surface on the earth, but slightly longer—about twenty-four hours and thirty minutes. But the important thing is that we proved that there was an internal clock independent of the natural terrestrial day/night cycle. Interestingly, during the subsequent experiments I did with other research subjects, all of the people in the caves showed cycles longer than twenty-four hours. In fact, it became common for them to achieve cycles lasting forty-eight hours: They would have thirty-six hours of continuous activity followed by twelve to fourteen hours of sleep. After we made that discovery, the French army gave me lots of funding. They wanted me to analyze how it would be possible for a soldier to double his wakeful activity.

https://www.cabinetmagazine.org/issues/30/foer_siffre.php

https://www.nytimes.com/2024/09/20/science/michel-siffre-dead.html

It turns out that a lot could happen: Time as he experienced had “telescoped,” he said. His circadian rhythm of wakefulness and sleep stretched from 24 to about 25 hours. And what felt to him like one month was in fact two on the surface.

Jealousy and Flirtation, 1874
-Haynes King, English artist