Witnessing the Heliacal Rise of Sirius and Procyon

Schoch Karl , Planeten-Tafeln fuer Jedermann (Berlin and Pankow, 1927); Schoch C. , The “arcus visionis” in the Babylonian observations (Oxford, 1924).

Kugler Xaver Franz , Sternkunde und Sterndienst in Babel (Münster, 1907–9).

Sachs Abraham , “Sirius dates in Babylonian astronomical texts of the Seleucid period”, Journal of cuneiform studies , vi (1952), 105–14.

The program babylonia 1.1 was written by me for use in studies of the Babylonian calendar and astronomy, and placidus 3.0 for astronomy and Renaissance astrology. Both use algorithms given by Jean Meeus in Astronomical algorithms (Richmond, Va, 1991).

Schaefer Bradley E. , “The heliacal rise of Sirius and ancient Egyptian chronology”, Journal for the history of astronomy , xxxi (2000), 149–55.