Nicosia is the most easterly capital in the European Union, being in Cyprus, which is the most easterly country that is a member of the European Union.
The easternmost capital city in Europe is Tbilisi, the capital of Georgia. It is located at the crossroads of Eastern Europe and Western Asia, making it the furthest east among European capitals. Tbilisi lies on the banks of the Kura River and serves as a significant cultural, political, and economic center for the region.
The most easternmost capital city on the mainland of Africa is Mogadishu. It is the capital of Somalia.
The easternmost capital city of Texas is Austin. Located in the central part of the state, Austin serves as the political and administrative center of Texas. While it is not the easternmost city in Texas, it is the easternmost city that functions as the state capital.
Helsinki, the capital and largest city of Finland, is located in southern Finland on the shore of the Gulf of Finland. The Gulf of Finland is the easternmost arm of the Baltic Sea.
Papua is the easternmost province in Indonesia. It covers the western half of New Guinea and other closeby islands. The capital of Papua is Jayapura.
Augusta, Maine
Rhode Islands Providence.
Rhode Islands Providence.
St. John's, Newfoundland
St. John's , Newfoundland
My guess is Wellington in New Zealand is both the southernmost and the easternmost capital city on earth. 41° 17′ 0″ S, 174° 27′ 0″