There might be a new calendar year system by then. Probably some galactic dictator who says that the beginning of their rule is now Year Zero.
Year Zero of the Glorious Zorg Empire!
Lol China used to use “Year 1” right after Xinhai Revolution.
Its “民国” (ROC) followed by the year number
Example: 民国一年 ROC Year One (aka 1912)
(ROC stand for Republic of China, btw)
Then the communists kicked the KMT out, and I think the ROC government in exhile in Taiwan stopped using it.