BC AYN 2636
Annual Report (AR) beginning:
January 1 (GongLi 公曆, 2637 BCE) Gregorian calendar.
Chinese Sexagenary Cycle
LiuShi HuaJia (六十花甲); "6(x)10(=60) blossoms or fancy pattern of shells" is constructed of the GanZhi (干支) cyclic numeral system of 60 combinations of the two basic cycles, the 10 Heavenly Stems (天干; TianGan) and the 12 earthly branches (地支; DiZhi) similar to the Sumerian sexagesimal base-sixty numeral system with 60 as the base. Sexagesimal is also used in measuring angles, geographic coordinates and time. The official LiuShi HuaJia (六十花甲) Chinese sexagenary cycles begin in BC AYN 2636 with the 1st/78 cycles, so BC AYN 2696 begins the Chinese sexagenary cycle designated 0 and all previous cycles are designated with a minus sign before the number of the cycle. Likewise the JiaZi (甲子) sequence notation in the Universal Syphers™ and WikiSyphers begins using 0:00 for the 0 sexagenary period of BC AYN 2696-BC AYN 2637: 00-59, while others may use 1:00.
Ecclesiastical Lunar New Year
HuangDi (黄帝); "Yellow Emperor"
20th-21st/100 years of the Yellow Emperor: HuangDi (黄帝) born in BC AYN 2656 who is often credited with inventing the Chinese sexagenary cycles, which are similar to the Sumerian sexagesimal divisions of 60, by dividing time into 60-year cycles.