《旧五代史·后晋·列传十一》
于是下令颁布实行，称作《调元历》，采用了几年之后，则有了差误，便不用了。
乃下诏班行之，号《调元历》。行之数岁辄差，遂不用。
As a result, an order was given to promulgate and implement it, called the "Tiaoyuan Calendar". After several years of implementation, it generated errors, so it was no longer used.