The alarm in the Chernihiv and Sumy regions was sounded at 00:14 (21:14 GMT).
At 1:01 an alarm was also announced in the Poltava region, half an hour later in the Dnipro and Kharkiv regions, and a little later in the Mykolaiv, Odesa, Cherkasy, and Kirovohrad regions.
At 1:48 an air raid alert was sounded in Kiev. Air raid warnings were also in effect in the territories of Zaporizhzhia and Kherson regions controlled by Kyiv.
Russia began striking Ukrainian infrastructure on October 10, two days after the attack on the Crimean Bridge.
The strikes are carried out on power, defense industry, military command, and communications facilities across Ukraine.
Since then, air raid warnings have been issued in Ukrainian regions every day, sometimes throughout the country.