Is my lack of catechism showing?

I proved yesterday that I don't know the Catholic calendar that well. Not to mention the secular calendar.

I was on Skype with a friend. "Happy Ash Wednesday," I typed, adding jauntily: "If that's appropriate to say."

"We Catholics recognize Ash Wednesday at the beginning of Lent," he returned. "This is Holy Thursday."

Keith, Ya Goof!

Updated later: Wait, he said Maundy Thursday. Ya Double Goof!