阴水兔年 (female Water-Rabbit) 230 or −151 or −923 — to — 阳木龙年 (male Wood-Dragon) 231 or −150 or −922
Year 104 (CIV) was a leap year starting on Monday (link will display the full calendar) of the Julian calendar, the 104th Year of the Anno Domini (AD) designation, the 104th year of the 1st millennium, the 4th year of the 2nd century, and the 5th year of the 100s decade. At the time, it was known as the Year of the Consulship of Suburanus and Marcellus (or, less frequently, year 857 Ab urbe condita). The denomination 104 for this year has been used since the early medieval period, when the Anno Dominicalendar era became the prevalent method in Europe for naming years.