If the number of in-game days exceeds 89478, the date overflows.

Steps to reproduce the issue.
Keep playing the game until the number of in-game days exceeds 89,478 (2,147,483,647 ticks).
(Or specify the number of days in the command.)

Expected result.
You can reach 89,479 days and beyond.

Actual result.
The date overflows and becomes negative.

Derived issues.
The negative date causes the day counter to become abnormal.
Other issues include Eyeblossom and Creaking Heart not working properly.