The Roman Colonia Marciana Ulpia Traiana Thamugadi (Timgad) and Trajan's Birthday

2020-01-04T11:05:33Z (GMT) by Sparavigna, Amelia Carolina

It is told that the Roman Colonia Marciana Ulpia Traiana Thamugadi, that is Timgad in Algeria, had been oriented to the sunrise on the day of Trajan’s birthday, that is 18 September 100 AD. Here we use software CalSKY to investigate the sunrise azimuth and compare it to the direction of the decumanus of the Roman town.