Athenian weather, like Earth’s, varies greatly, ranging from tropical rain forests to arid deserts and frozen tundra. In general, seasons are less extreme because of the planet’s lower obliquity, 21° versus 23° for Earth. The atmospheric pressure, just five percent higher than Earth’s, creates higher wind pressures, but the difference is insignificant, being less than the normal variation in atmospheric pressure due to changing weather patterns. Athena revolves on its axis once every 25 hours, creating a day most nearly compatible with the natural rhythm of Human beings. Because the planet orbits farther from a larger star, it receives nearly the same amount of sunlight as Earth. The spectral radiation of Sabex 50, though of a slightly lower frequency than Earth’s sun, is not noticeably different.