Thanksgiving is traditionally the day where people give thanks for the year's harvest. While other countries have similar celebrations at different times of the year, the US celebrates Thanksgiving on the fourth Thursday in November. That, of course, is tomorrow, November 23rd.
Being an outstanding US citizen, Batman is keen to take part in the upcoming celebrations. Without a family with whom to spend the day, our hero will instead be heading to see Calendar Man in the basement of Arkham City's Court House. His visit will count for one of the 12 magical dates needed to unlock the following achievement in Batman: Arkham City Achievements
, Batman: Arkham City (Xbox 360)
and Batman: Arkham City (PC)
So remember to take some time away from your family, friends and the turkey dinner to pay a visit to your favourite date-related supervillain if you don't want to have to resort to the offline trick or wait another year!