Ok - I think the answer is that Alaska went from the Julian Calendar to the Gregorian Calendar. Therefore, for residents, Friday, October 6, 1867 was followed by Friday, October 18, 1867—two Fridays in a row because of the date line shift.
The Julian Calendar is currently 13 day behind the Gregorian Calendar.
Look, you've got it all wrong! You don't NEED to follow ME, You don't NEED to follow ANYBODY! You've got to think for your selves! You're ALL individuals!
Yes! We're all individuals!