There's at least one computer on Mt Athos.

I've heard a first hand story about a monk there who takes nice photos of animals. He just goes for walks and says, for example, "Snake, come here let me take your photo!" So the snake swims across the lake for a good close up.

You can get lots of great photos that way.

I know for certain that, from 1997 onward, there was at least one Amiga 2000 on Athos (specifically, in Vatopedi) because it used to be mine.

How long it stayed there, or whether (given that it was originly a N.American, thus 60hz/NTSC edition, though perhaps it could detect and switch to PAL operation) it was ever even plugged in, I never found out.

I'm not even sure the monk who I gave the system to (staying in the US for study) had any particular plan for it, though he did know his way around the machine just well enough to run tetris and wordperfect.

The constant "time zone" changes might throw a wrench into calculating the offsets. How far in advance can we calculate sunrise/sunset times?

Depends on what you mean by sunrise/sunset. “The relative position of the sun’s edge drops below/rises above the tangent of the average surface at sea level” is pretty easy to calculate many years out; the complications are deviations in Earth’s orbit. “I can/can’t see the sun anymore” depends on local weather, good luck.

> “I can/can’t see the sun anymore” depends on local weather

For anyone wanting to know a bit more about why this is, here's some additional details:

https://www.youtube.com/watch?v=-sj868IzNrk

https://en.wikipedia.org/wiki/Atmospheric_refraction

Technically, one might also argue something weird like, "If I can see sunlight, it's still daytime" in which case a different phenomina would come into play:

https://www.atoptics.co.uk/highsky/zod1.htm

https://en.wikipedia.org/wiki/Zodiacal_light

What this all comes down to is, roughly speaking, even after the sun has technically set, there's still a bit of leeway before we no longer see the sun/sunlight due additional factors.

Infinite, there is a mathematical formula: https://en.wikipedia.org/wiki/Sunrise_equation

I am frustrated in the faintness of memory, but I dimly recollect an area which, for about two years, altered time every day so that noon was when the sun was directly over head. Something Royal Time, or something Solar Time.

There are some weird time zones out there.

They have computers. Some monasteries are modernized and they use computers to digitize old documents and books, or for daily works.