Required Mod: HugsLib
What does this mod do?
Days Matter allows you to add and remove memorial days. The colonists will start party accordingly.
Installataion
You can install and enable this mod at any time.
Uninstallation
You can disable and uninstall this mod at any time. However, after you disabled the mod, you'll see some error popping up the first time you load a save with this mod. It is safe to just override the save file, and you will not see the error message any more.
Extra
Currently, in vanilla game, birthdays of colonists born before the start of the game were calculated wrong, this mod fixes it.
GitHub
If you liked this mod, please give me a star on GitHub: https://github.com/WiseClock/RimWorldDaysMatter. Thank you xD.
Thanks to Ilmoran @ GitHub, artwork issue should now be solved.
B19 version can be found here: https://github.com/WiseClock/RimWorldDaysMatter/releases/tag/0.19.0
Feel free to fork it, just don't forget to give me credit > <.