Top 55 cities in Ukraine:

Chernivtsi, Kyiv, Yalta, Chernihiv, Ivano-Frankivsk, Mukachevo, Truskavets, Illichivsk, Lviv, Lutsk, Irpin, Sevastopol, Kam’yanets-Podilskyi, Kolomya, Khmelnytskyi, Simferopol, Uzhhorod, Pereyaslav-Khmelnytskyi, Poltava, Odesa, Ternopil, Svalyava, Myrhorod, Kirovohrad, Bila Tserkva, Feodosia, Mykolaiv, Uman, Ostroh, Netyshyn, Sumy, Cherkasy, Zhytomyr, Pivdennoukrainsk, Alushta, Rivne, Vinnytsya, Enerhodar, Boryspil, Kherson, Sudak, Vushhorod, Pavlohrad, Dnipropetrovsk, Mariupol, Donetsk, Kerch, Kremenchuh, Brovary, Kharkiv, Berdyansk, Artemivsk, Yevpatoria, Luhansk and Zaporizhzhya.

19th on the list for Poltava. Why? It is a nice city (excluding the weather to the Crimea).

Is Zaporizhzhya deserving of being last?

Hmm, pretty strange list...

Do you meen Season? IMHO - May and September.