Pedant alert, pedant alert .... Somewhat surprisingly, at least to me, grammar pedants on both sides of the Atlantic (I'm on the eastern side) agree that it should now be "a historic". However English is an evolving language and up to the 1960's "an historic" e.g. "an historic event" was the norm, however in the last 50 years, it has become "a historic event". Local pronunciation also comes in, as the aitch in historic can silent or elided, e.g. East and South East London often drops their 'aitches' as does parts of north England. I am trying to find The Times or The Guardian's guide to grammar as they are usually authoritative and up to date. I have to say as 1) Being British 2) Living in SE London for 30 years 3) Now living in North Yorkshire that I had to think about this and work out what I would say. I recognise that in the grand scale of Covid-19, discussions about this are probably not that important, but it's interesting at least to me, how language usage changes. Now can we discuss colour, aluminium, aesthetic, calibre, dialled, kilogramme, prologue and a few other please :) Thanks and have a good weekend, Rob