The calendar widget that I’ve added the the site recently (see the left hand side bar below the login section) is great, but has an annoying bug: it gets the date right, but the day of the week wrong.
My guess is that this reflects if US origins, and the author has set it up on US time only. Since the USA is a day behind Australia, while the actual calendar is correct, all the days are shown as the day before in the text popups.
So today’s talks (on THURSDAY February 12th) are shown as taking place on Wednesday February 12th when you click on the date.