system
A chat on subreddit /r/me_irl
human
Not days but 2 minutes. There are 365 days. If we divide that with 13 months, we don't get an even 28 days, there's left over. What do we do with that extra time a month?
gpt
We have 13 months of 28 days each and one day extra (2 in a leap year)  designated as "New Year's Day".