I appreciate the love! I’m so excited to have people take interest. So I actually just spent a bunch of time developing way the seasons worked before the Endless Winter, and calendar that was based on that. For these purposes, I’ll be speaking as if the Endless Winter hasn’t come yet so I don’t have to keep saying “before the Endless Winter”.
For starters, there is a distinction made between yuni, days, and masida, cycles. yuni refers to the time from one sunrise to the next and is based on the actual solar passage of a day. masida refers to the time from one iterator rain to the next. Outside the retaining walls, there are seasons (Rainy season, monsoon, dry season, and drought). Depending on the season, rain outside the retaining walls is much gentler and starts and stops sometimes independent of nearby iterator activity. Outside of monsoon, the rain isn’t typically strong enough to force slugcats to end the day. It’s much like rain in real life, starting and stopping whenever the weather demands.
Meanwhile, within retaining walls, the influences of the iterators disrupt the seasonal cycles. Plants tend to just grow and animals habits are significantly less regularized. Rains can be harsh and potentially deadly, and less predictable than a day/night cycle, the rains effectively dictate what constitutes a meaningful day within retaining walls. I imagine that at least in Undergrowth, rains within retaining walls can last up to but not more than a full 24 hour day, but that tends to be rare unless the iterator is dabbling in irregular, intensive processes (so make sure you’ve packed enough supplies). Otherwise though, the rains tend to come closer to night and end at some point after the next day comes, as that’s when the air is cooler and more conducive to rain.
Because of this, slugcats outside retaining walls tend to refer to days as yuni while those inside the retaining walls tend to refer to days as masida, because that’s what’s more useful to them. Slugcats otherwise don’t hibernate in Undegrowth, they maintain rather human-like sleep requirements.
Below are the months of the Yongasabi calendar and how the seasons map to them. Note that as mentioned, these seasons only apply outside of retaining walls.
Once the Endless Winter comes, I imagine the day/night cycle largely dictates how most creatures behave both inside and outside retaining walls; the air is warmer and more hospitable in the day, but as night progresses, it becomes colder, the winds become harsher, etc. Shelter by day and shelter at night. Many of the old natural annual events that inspired that months of the calendar are at this point defunct. However, those who historically lived inside retaining walls still refer to days as masida.
Slugcats and Scavengers who live underground are less beholden to the day/night cycle because they can work free of the cold. However, they still keep track of the day for the purposes of scheduling, and they track the dates for the sake of crops, animal rearing, and tracking important events. Some businesses still work by a daytime schedule in order to maintain common business times and accommodate those who have to travel by day, outside in the cold.
Boy howdy. I hope that answers your questions. I have given this stuff a lot of thought just because I like the way these little things help to contextualize the characters and make the world feel more lived it, and it’s nice to be able to answer questions like this.