Indiction

The space of fifteen years. It was used in dating at Rome and in England. The institution of indlction dates from the time of Constantine I., Sept. 1, or, according to some authorities. Sept. 15, 312; but the first instance of the use is mentioned in the Theodosian Code, under the reign of Constantius II. The papal court adopted computation by indictions about 800, the commencement of the first indiction being referred to Jan. 1, 313. The first year was reckoned the first of the first indiction, and so on till the fifteen years afterwards. The sixteenth year was the first year of the second indiction; the thirty-first year was the first year of the third indiction, etc.