621
xkcd #2922: Pub Trivia
(imgs.xkcd.com)
Alt text:
Bonus question: Where is London located? (a) The British Isles (b) Great Britain and Northern Ireland (c) The UK (d) Europe (or 'the EU') (e) Greater London
That is why the explanation continues: "(other than pedantic exceptions due to calendar issues or timezone alterations, or someone dying before their birthday, or being born on a leap day, none of which apply in this case)".
are we sure that none apply in this case? which BTS members still have upcoming birthdays that they could die before
I just checked the Wikipedia articles and it seems that two of them have already had their birthday this year, five not.