Facts & layers · 50 BCE
Dendera is Egyptian—and nearly two millennia later
A real temple object can preserve Egyptian decans and still belong to a changed, Ptolemaic sky.
What the object establishes
The Louvre catalogues the circular sandstone ceiling from the Temple of Hathor at Dendera to 50 BCE, under Cleopatra VII and Ptolemy XIII. Its decoration includes a zodiac, decans and constellations. That object-level description is enough to establish coexistence in this late setting.
What it does not establish
The zodiac's twelve signs and private horoscope tradition have Babylonian roots and were combined and codified across the Hellenistic world. Their appearance at Dendera does not move them backward onto the Middle Kingdom coffin tables, whose thirty-six columns served a different calendrical and nocturnal structure.
The boundary Bodhastra keeps
Middle Kingdom diagonal table, New Kingdom astronomical ceiling and Ptolemaic zodiac are three dated witnesses—not interchangeable illustrations of one timeless “Egyptian horoscope.”