Something tells me this day will eventually live in greater infamy than 9/11.
Like in 2230, provided there is still something resembling the human race, "9/11" will be just another boring date to memorize together with shit like the Alamo w/e.
The day the republic fell, however, will be a lot more recognizable and memorable.
248 years. Empires "always" last around ~250 (Let's ignore the Romans for now) so we're exactly on time.