The Sirius piece is the one part of that cluster that is an actual sky event, and it turns out not to hold a date either. Heliacal rising is the first morning a star clears the horizon while the sky is still dark enough to show it, so it depends on where you are standing. Running 2026: Luxor gets it right at the start of August, Athens around the middle of the month, London not until the very end of August or the start of September. Close to four weeks of spread, and that holds whichever visibility threshold you use, since the threshold moves every site by three or four days but does not close the gap between them.
So August 8 is latitude specific in a way the number eight is not. Which cuts the same direction you are already cutting. A fixed calendar date cannot be tracking a sky event that arrives on a different day depending on where you stand, and the Egyptian sources were writing from one latitude rather than for everyone.
The Sirius piece is the one part of that cluster that is an actual sky event, and it turns out not to hold a date either. Heliacal rising is the first morning a star clears the horizon while the sky is still dark enough to show it, so it depends on where you are standing. Running 2026: Luxor gets it right at the start of August, Athens around the middle of the month, London not until the very end of August or the start of September. Close to four weeks of spread, and that holds whichever visibility threshold you use, since the threshold moves every site by three or four days but does not close the gap between them.
So August 8 is latitude specific in a way the number eight is not. Which cuts the same direction you are already cutting. A fixed calendar date cannot be tracking a sky event that arrives on a different day depending on where you stand, and the Egyptian sources were writing from one latitude rather than for everyone.
Exactly. August 8 is calendrical not astrological