The traditional Chinese holiday of Er Yue Er (2nd day of 2nd Lunar Month) aka Spring Dragon Festival (Chun Long Jie/春龙节) falls on March 6, 2011. The day is also referred to as Long Tai Tou, meaning Dragon Raises Head, a festival related to precipitation, drought, and the rebirth of Spring in China that dates back to the Tang Dynasty. The dragon god associated with rain and snow in the myths of Long Tai Tou is seen to control the weather – one prevailing story involves China’s strong Empress Wu Zetian and four dragon gods. People celebrate with roasting golden beans and popcorn to allow the dragon god to provide the right weather for a good Spring. Recent snows are a good start to ending the winter drought of 2010-11. Celebrate Er Yue Er to thank the dragon. Er Yue Er is also said to be a lucky day to get a haircut.
More info from China Info Online
The folklore goes that every second day of the second lunar month is the time when the dragon in charge of rain lifts its head. From that day on rainfall will increase gradually, so it is called the “Spring Dragon Festival” or “Dragon Head Festival.” It is characteristic of the North China Monsoon that the rainfalls begin to grow after the second day of the second lunar month. However, seen from another perspective, the festival also shows people’s wishes for fine weather and a better harvest.