Amazing and sad that this bug still exists in the OS today. The reason @pdm didn't reproduce the bug is because his timezone was likely set to +0 or less. Since it appears they work for Apple we're going to assume that their timezone is likely -7 or -8 depending on the time of year. The reason why it occurred for @BlixLT is because their timezone is +1 or greater. This bug doesn't occur if one uses 4 digit years.