The meridian 23° east of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, the Atlantic Ocean, Europe, Africa, the Indian Ocean, the Southern Ocean, and Antarctica to the South Pole.
The 23rd meridian east forms a great circle with the 157th meridian west.
Starting at the North Pole and heading south to the South Pole, the 23rd meridian east passes through:
Meridian 22.5° East crosses most countries (sovereign states) from all meridians: 26 in total. When Svalbard (in the North) and Antarctica (in the South) are added it crosses 28 territories.
From North to South: Norway, Finland, Sweden, Estonia, Latvia, Lithuania, Russia (Kaliningrad), Poland, Slovakia, Ukraine, Hungary, Romania, Serbia, Bulgaria, North Macedonia, Greece, Libya, Chad, Sudan, Central African Republic, Congo Democratic Republic, Angola, Zambia, Namibia, Botswana and South Africa.
The line could be drawn from Tappeluft in Norway (the most northern town on mainland on this meridian) to George in South Africa (the most southern city on this meridian) which is 11,573 km. It crosses also Turku in Finland. Meridian 22° East misses Ukraine and Bulgaria and Meridian 23° East misses Russia (Kaliningrad), Slovakia and Hungary. Halfway both meridians, on 22.5° EL, those missing countries are on the line.