I’m sorry but it doesn’t make sense to me. Regardless of the month, I think what matters first is to know what day of the month you are in, if at the beginning, in the middle or at the end of said month. After you know that, you can find out the month to know where you are in the year.
What is the benefit of doing it the other way around?
Ignoring the coding side of things…
It’s relative. And also works easier to navigate the calendar. If we’re planning something for next year I pull up next year’s calendar. If it’s this years and we’re planning something for later this year, when I hear you say August, that’s the month I go to. But if you say the 27th of August, The first thing I heard was the 27th which could possibly be this month or next month if it’s say the 28th today.