RealisticSeasons but nothing seems to work. Why isn't it working? Seasons are disabled in all worlds by default, run /rs set <season>. This will enable seasons, the calendar and temperature in your world. The season cycle will also start.
Will RealisticSeasons remove the snow and ice in my snowy biomes? No, it will never remove any naturally generated snow and ice.
I want one season to take x amount of real-life days. Is this possible? Yes, set "calendar-is-real-life-days" to true in the calendar.yml and change the months to how many real-life days you want them to take.
Birch and spruce leaves aren't changing colours. Why is this happening? The colours of birch and spruce leaves can't be changed by biomes. The colour is hard-coded into the client, they're impossible to change.
Temperature doesn't work in the nether and end, how do I fix this? Go to both the nether and end and run /rs temperature toggle
Does RealisticSeasons support x world generator? RealisticSeasons supports all world generators, see custom biome configuration for details. Terralith works the best.
Does RealisticSeasons mess with the biomes on my server? No, RealisticSeasons never changes a single biome, it is all client-side through packets. This means that biomes may look like they've changed but they actually haven't. All vanilla and plugin mechanics work like normal. Check out Biome colours for more details.