where shadows vanished under the noontime sun (meaning that the sun reached its zenith) 45 days before and 45 days after midsummer. Pliny claims that this gave Eratosthenes the idea about how to calculate the circumference of the Earth (N.H. 2.183, 6.168). Popular culture In the Paradox Development Studio grand strategy wargame Imperator: Rome, Ptolemais Theron is controlled by an autocratic monarchy of the Blemmyan culture, in the Aksumite culture group, with Kemetic religion, starting in the game's main campaign during the time of the Diadochi in 304 BC. In the Creative Assembly strategy game Total War: Rome II, Ptolemais Theron is a major settlement controlled by the Blemmyes faction In the game‘s ‘grand campaign’. Notes Ptolemaic colonies in the Red Sea Former populated places in Sudan Blemmyes Ancient Greek geography of East Africa