Longer Day

Longer Day slows the internal time progression of the world so the sun and moon cross the sky at a gentler pace. By default the day and the night each last one real hour, two hours per full cycle, and the lengths are set in a configuration file generated on the first run. Server-side game logic such as crop growth and mob spawning follows the stretched cycle, while client-side rendering interpolates the sun and moon positions so their movement stays smooth instead of stuttering or jumping across the sky.

The day and night lengths can be set independently, so a server can make days long and nights short, or use the same length for both. An auto-sync option is on by default and makes the night mirror the day length, which keeps balanced cycles. Sleeping in beds and the time set command are handled without causing a desync between the server and connected players.

Longer Day is a Forge mod for 1.12.2 only, published under the MIT License as open source. The server must run it, while players may add it to get the same smooth sun and moon rendering on their own side; a client without it still joins and plays. It works in single-player worlds and on dedicated servers.