Talk:Fictional chronology/@comment-3410511-20150720152336/@comment-27791648-20160213202421

A moon used as a length of time refers to the length of a lunar cycle, usually new moon to new moon or sometimes full moon to full moon, which is about 28 days long. Go with 365 days in a year divided by 28 days which gets you about thirteen moons, so 100 moons divided by thirteen equals 8 years. This is rounded out by the way.