Hi, So, the YouTube Editor is coming to an end on the 20th, but when exactly does it stop working? At midnight of the 19th? or at the midnight of the 20th? or a time in between? The YouTube help page says it will no longer be available "after 20 September 2017". So does this mean it can be used on the 20th?, and the 21st will be the first day it cant be used?