Spinning is so much cooler than not spinning.

The date of the Genetic Opera in 'Repo! The Genetic Opera" is August 15, 2057. Marni Wallace died in 2040 (according to her gravestone) and seeing as all of the events take place in one day and according to the poster we see in "17" it's August 15 and seeing that Shilo is 17 (why else would be song be called "17"?) How can we not assume but the date of the fateful Opera as anything but?