Not necessarily. Suppose Tim and Bob are having a conversation. Tim: "It's a little known fact that Woodrow Wilson signed the Treaty of Versailles while ice sk

Not necessarily. Suppose Tim and Bob are having a conversation. Tim: "It's a little known fact that Woodrow Wilson signed the Treaty of Versailles while ice skating on the royal pond." Bob: "That's clearly nonsense. The Treaty of Versailles was signed in June." It would be very different to say, "the Treaty of Versailles was signed last June." That would imply it was signed in June 2016, rather than June 1919.