While romantic couples across the world have fixed up this date to say 'I do's', businesses like Dominos Pizzas has taken this opportunity to use it in a marketing strategy.
Other events pegged to take place on this day are hitting the news. The movie 9, a computer-animated fantasy about life after the apocalypse was released on Sep 9.
Noting that cats are believed to have 9 lives, AOL's Urlesque.com has called for a web-wide ban on cat-related coverage to protest all the cute online cat photos and videos.
Another report says, parents-in-waiting who believe that this is an auspicious day to have a child have all lined up for delivery by Ceasarean section.
From magic to science, there are a slew of theories and speculations doing the rounds now, but the bottom line would be the fact that 9/9/09 is the single-digit date for almost a century.