Well, really we should use the World Calendar, as specified by the League of Nations, or the Hijri since we're discussing Islam, or good 'ol ISO 8601 as this is

Well, really we should use the World Calendar, as specified by the League of Nations, or the Hijri since we're discussing Islam, or good 'ol ISO 8601 as this is Hacker News. Heh, yeah, it all does become a little silly. The important thing is communication. Using Christian dates is needlessly upsetting when discussing world religions. Upsetting people disrupts communication, so I avoid it.