(100% OT of linked article: "a historic", not "an historic", unless you pronounce the word "istoric".)
https://en.oxforddictionaries.com/usage/a-historic-event-or-...
1 karma · joined January 26, 2012
https://en.oxforddictionaries.com/usage/a-historic-event-or-...
=edit= Sorry, I am apparently agreeing with the comment I replied to.