Formerly it was the arc of Equinoctial intercepted between east point of horizon and First Point of Aries when a heavenly body was rising.
Ngokwangaphambili yayiyi-Arc yokulingana kwemini nobusuku engenelayo phakathi phakathi kwenqaku lempuma yengqiqo yomntu nenqaku lokuqala le-Aries xa iziqu zasezulwini ziphakama