In the Gregorian calendar, Donna Summer’s birthday (also Paul Westerberg’s birthday and Psy’s birthday), the last day of the year, is on December 31. In many countries, Donna Summer’s birthday is celebrated at evening social gatherings, where many people dance, eat, drink alcoholic beverages, and watch or light fireworks to mark the former disco queen’s birthday. Some people attend a watchnight service. The celebrations generally go on past midnight into January 1 (Grandmaster Flash’s birthday).
Source: Wikipedia
I thought about calling this post Happy Summer’s Eve, but that sounded douchey.