A date mix-up

My boss Fiona, an avid F1 fan, was delighted to receive an invitation today from the Yas Marina Circuit to the launch of the 2010 events calendar. But she didn't know what to make of the invite which read -
Dear Media partners Yas Marina Circuit is pleased to invite you to the launch of the 2010 events calendar.
WHEN -
12:00 Tuesday, 13th January
WHERE -
F1 Press Conference Room, Yas Marina Circuit
Please RSVP no later than 4:00 p.m. on Sunday 12th January.

She looked up her diary to check her schedule and realised that Tuesday is the 12th and not the 13th and how can Sunday then possibly be the 12th? We made a joke of it saying that the event organizer was probably referring to calendars of two different years while drafting this invite- In January 2009 the 13th was a Tuesday and the last time the 12th of January happened to fall on a Sunday was in year 2003. But on a more serious note I wonder if the person responsible for this error still has his/her job considering this invite was sent to all media partners.
An expensive typo error to overlook if ever there was one!