In the sea of stars, the passage of time wasn't measured by the calendar of Yuanchen Star.
To put it simply, the divisions of year, month, and day were merely based on that planet's rotational and orbital periods.
Through his studies with Little Honeydew, Yu Fei learned about the common time scales used in the sea of stars. The most common unit was the Karen, which was roughly equivalent to 1/5th of a second on Yuanchen Star. The next level up was called a 'xi,' approximately equal to 3.2547... seconds.
Of course, this name had no corresponding meaning in Yu Fei's linguistic system; they were merely phonetic transliterations.
The unit above that was called a 'lun,' which corresponded to minutes and was about 4.85 minutes long.
A 'shuo' corresponded to hours, lasting about 1.92 hours.
A 'jie' corresponded to days, lasting about 2.46 days.
A 'hua' corresponded to months, equivalent to 1.75 months, and a 'chen' corresponded to years, lasting about 2.7 years.
