HKB
south of Byzantium, Nicæa,[961] and Marseilles 1500 stadia. The parallel of Lysimachia[962] is a little to the north, and according to Eratosthenes passes through Mysia,[963] Paphlagonia, Sinope,[964] Hyrcania,[965] and Bactra.[966]
About Byzantium the longest day consists of fifteen and a quarter equinoctial hours; the proportion borne by the gnomon to the shadow at the summer solstice, is as 120 to 42, minus one-fifth. These places are distant[967] from the middle of Rhodes about 4900 stadia, and 30,300 from the equator. Sailing into the Euxine and advancing 1400 stadia to the north, the longest day is found to consist of fifteen and a half equinoctial hours. These places are equi-distant between the pole and equatorial circle; the arctic circle is at their zenith, the star in the neck of Cassiopeia is within this circle, the star forming the right elbow of Perseus being a little more to the north.
In regions 3800 stadia north of Byzantium the longest day consists of sixteen equinoctial hours; the constellation Cassiopeia being brought within the arctic circle. These regions are situated around [the mouth of] the Dnieper and the southern parts of the Mæotis, at a distance from the equator of 34,100 stadia; and the northern part of the horizon during almost all the summer nights is illuminated by the light of the sun; a certain degree of light continuing from sunset to sunrise. For the summer tropic is distant from the horizon only the half and the twelfth part of a sign[968] [of the zodiac], and this therefore is the greatest distance of the sun below the horizon at midnight. With us when the sun is at this distance from the horizon before sunrise and after sunset, the atmosphere is enlightened to the east and west respectively. In the winter the sun when at the highest is nine cubits above the horizon.[969] These places, according to Eratosthenes, are distant from Meroe rather more than 23,000 stadia,[970] for he says that [from the parallel of Meroe] to the Hellespont[971] there are 18,000 stadia, and thence to the Dnieper 5000 more. In regions distant 6300 stadia from Byzantium, and north of the Mæotis, the sun during the winter time is, when highest, six cubits [above the horizon]. The longest day consists of seventeen hours.