If you're Chinese, today is a remarkably lucky day. In Chinese, 9/9 is pronounced "jiu-jiu", which sounds like "long-long" or "for a very long time", so...
September 9 is also the day that the Chrysanthemum Festival is held in Japan for this auspicious date (and Chrysanthemums also feature in China on that double ninth day), so perhaps a Chrysanthemum Cocktail would be in order!