3 ms·Nope, you'll upset people using different calendars. BCE, Before Common Era.by mrlonglong 3y agoNope, you'll upset people using different calendars. BCE, Before Common Era.ithkuil 3y agoBC: Backwards Chronology AD: Advancing Datestrackflak 3y agoWhat makes this era common?acheron 3y agoHope you didn't call today "Thursday", you'll upset people who don't worship Thor.