On May 11, 1745 the New England attackers got ashore near Louisbourg to begin their siege of that town. No, I'm not about to liveblog it. Someone could, though.
Wikipedia will tell you the siege began on April 30 -- because its entry is built on ancient New England hagiographies that follow the ancient Julien calendar. New England (and Britain) did not convert to the modern Gregorian calendar until 1752, so all its dates were about eleven days out of whack. (Funny how one often finds Wikipedia convenient and adequate enough, until it comes to something you actually know about.)
May 13: Stephen Bown comments:
Regarding Wikipedia, your comment about Wikipedia being "convenient and adequate enough, until it comes to something you actually know about" applies to most newspaper reporting too, I've noticed.
I think you should enter the date change on the Wikipedia site yourself, including the rationale/explanation. Wikipedia is supposed to be constantly evolving by seeking the input of specialists and other knowledgeable people and I think that clarification would be a valuable contribution.
