Cæsars, The Era of, also known as the Spanish Era, a period of time reckoned from Jan. 1, 38 B.C., being the year following the conquest of Spain by Augustus. It was much used in Africa, Spain, and the S. of France; but by a synod held in 1180 its use was abolished in all the churches dependent on Barcelona. Pedro IV. of Arragon abolished the use of it in his dominions in 1350. John of Castile did the same in 1383. It was used in Portugal till 1415, if not till 1422. The months and days of this era are identical with the Julian calendar, and to turn the time into that of our era, subtract 38 from the year, but if before the Christian era, subtract 39.
Entry from Everybody's Cyclopedia, 1912.