12/13 at this end too. Looking at the high number of people with video essay date changes everyday, I feel that we are all dinged or the video essay date is seriously a glitch.
May be the applications are clubbed in pools based on GMAT scores, industry, location, Adcom member, interview dates etc. and when they are accessing that pool to review candidates, the dates are changes for all.
Does anybody notice any similarity in the change of dates among applicants?