Enough talk! More princesses in fishnets!
It’s all going to end that way whatever anyone says. Might as well get on with it.
Oh no, you don't!
We're gonna wait until those princesses in fishnets are good and ready!
Disappointing lack of anime so far though.
Yeah, sorry about that. I'm trying to do a thing, and hosting stuff is not really my forte.
So, seasons? We want to talk about seasons?

And this map?
Well, actually, let's start with this map and its accuracy. In a FE map, It's a simple light radius, with the sun moving east to west and back to start. You should draw this as three overlapping bands of light from about 90°N to 60°S, 67°N to 40°S, and about 23°N to 23°S.
Below 60°S gets low or worthless sun, while above 60°N has midnight sun but usually is kinda Greenland weather, and 40°N to to 60°N is about Canada to Alaska weather.
You will need to redraw lines of latitude, with some of the northern lines closer together are you move north, and farther and farther apart in the south.
The seasons shift because the sun scoots back and forth between the Tropic of Cancer, Equator, and Tropic of Capricorn over the course of the year.
Now, if this were RE, every part of this map would make sense according to degrees, but it's kinda a guideline. Lines of latitude are mostly correct for Russia and America, and way off for Europe and parts of Africa, to the point where you have to move countries up or down, in some cases widen latitude and add blank area. It's like this, at spring and fall the sun is situated at the equator. In the northern hemisphere, this translates to a 67° addition to current sun latitude.
This means in the winter in the northern hemisphere, the highest the sun should get is about 44°N, then the sun's light is weak. In the spring and fall, the highest area that gets much sun is 67°N. In the summer, you see a midnight sun from 65° to nearly 90°, due to overlap.
Why don't we talk about degrees in the south? Well, because the sun's light is based on distance not degrees. So it isn't an even I was confused at one point, trying to trace degrees, but that only works for the northern hemisphere. In the southern hemisphere, distance between latitudes doubles or more. It is completely worthless to use the same same standards, because below 60°, our governments forbid exploration, and tell us lies about circumnavigation. Of sure, some explorers have reached the outer zones, but their response to the exploration was to only a few years later start bombing the sky with nukes.
Another thing? We have proof of FE already. Think about this..If Earth were actually a sphere, the dimensions are 180°E to 180°W and 180°N and 180°S. Circles have to add up to 360°. It's a rule of geometry. 180° is half circle.
So what shape do we get when we put this on a circle? A
dome.

A “dome” isn’t uniquely defined by just those angles.
90° to the top: From a horizon plane up to the zenith is indeed 90° (a polar angle measured from “level” to “straight up”).
360° around: Yes, rotation fully around is 360°.
180° from north to south: That’s true only if you mean the semicircle in azimuth on a sphere (N → S) along a great circle: the horizontal half-way across is 180°. But a dome is usually defined by the surface seen from below, which spans many possible azimuth arcs (not automatically “north to south” unless you choose that particular slice).
Goddamn RE geometry programming. This is basic geometry, and they fucked it up.
If you mean the dome surface instead of the flat base, then the relevant “north to south” on the sphere is measured in the same way: it’s still half a great-circle, i.e. 180° in central angle, for a full half from one pole to the other (again assuming a true hemisphere).
Or, 90° to 90°.