Season System

🍂 Season System 1.2.0

🎉 Season System is now available for Forge and NeoForge, and on Minecraft 26.3! This update also brings a big round of fixes: a security fix for the admin commands, correct snow rendering in winter, seasonal colours on 1.20.1–1.21.11, two long-requested calendar options and a config file that finally explains itself. Many of these issues were found by Roman – thank you for the detailed reports! 🙏

🔨 Forge & NeoForge

• 📦 New builds for Forge and NeoForge on Minecraft 1.20.1, 1.21.1, 1.21.11, 26.1.2, 26.2 and 26.3 – with the same features as the Fabric version: calendar, weather, temperature, crops, HUD, calendar screen (K) and commands.
• 🌐 Optional on both sides of the network: vanilla clients can still join a server with Season System.

✨ New

• 🆕 Minecraft 26.3 is supported on Fabric, Forge and NeoForge.
• 📅 days_per_season finally works. The option existed before but was ignored. The HUD and calendar screen show the season length of the server, so clients always match it.
• 🌙 New option calendar_time_source:
  • world_age (default, as before): the calendar counts the days the server actually ran.
  • day_cycle: the calendar follows the day/night cycle – sleeping and /time advance the calendar.
  • 🔁 Switching on an existing world keeps your current date, and setting the time back no longer freezes the calendar.
• 🔮 Tomorrow's forecast now comes from the server config, so custom event chances on a server are shown correctly on every client.
• 📝 The config explains itself. Every option in config/seasonsystem.properties now has a short description, its default value and the allowed range, sorted into sections like Calendar, Weather, Temperature and Crops. The HUD file seasonsystem-client.properties got the same treatment.

🔒 Security Fix

• ⚠️ Any player could use the admin commands /season set, /season setday, /season event, /season temperature set and /season reloadconfig. The permission check always passed.
• ✅ These commands now require OP level 2, the server console or a command block. The host of a singleplayer world can still use them without cheats; LAN guests need OP.

🐛 Fixed

• 🌨️ Winter rendered rain instead of snow on 26.1.2 and 26.2 – including rain splashes and shaders seeing a warm biome.
• 🌲 Snowfall disappeared in forests, valleys and next to hills while the ground still got covered in snow.
• 🍁 Seasonal grass and leaf colours were missing on 1.20.1, 1.21.1 and 1.21.11.
• 🏠 Snow inside houses was not blocked on 1.20.1, 1.21.1 and 1.21.11, and on 1.21.x vanilla snowfall kept running next to the season system.
• ❄️ Natural snow in snowy biomes melted in singleplayer outside winter.
• 🌐 The season of the last server stayed active after disconnecting, even on servers without Season System.
• 🌗 Night temperature now follows the real day/night cycle after sleeping or /time set.
• 🛠️ Season weather is applied reliably again through the vanilla weather API.
• ⚡ Performance: much cheaper snow layer checks and world height lookups in the environment scans.
• 🧹 Update checker can no longer crash the server on a malformed download link.
• 🌫️ The menu blur covered the calendar window on 1.21.1. It now stays behind the window like on the other versions.

⚠️ Please Note

• 🔄 Server and client both need version 1.2.0 – the sync packet has changed.
• 📝 Changing days_per_season on an existing world moves the current date, because the world keeps its total day count.
• ⚙️ Existing config files are updated on the next start: missing keys and the descriptions are added, your values stay as they are.

📦 Versions

Fabric, Forge and NeoForge for Minecraft 1.20.1, 1.21.1, 1.21.11, 26.1.2, 26.2 and 26.3. The Fabric version requires Fabric API.