During the Spring of the Nations in 1848 a yellow and blue banner flew over the Lviv magistrate for the first time. It happened just after a revolution in Austro-Hungary, when a national movement started in the Ukrainian part of the empire. By then it had already turned into blue and yellow and sported a Tryzub in the upper left corner. The emblem remained unchanged by the successive government of Pavlo Skoropadsky and was later integrated into the Flag of Ukrainian SSR by the Bolsheviks. Though at the end of the Soviet empire blue and yellow were associated with the idea of national revival in Ukraine.
The town council of Ternopil on 20 th March 1990 voted upon the usage and re-establishment of the yellow-and-blue flag and on that day for the first time in about 80 years the national flag of Ukraine was flown on a governmental building in Kiev, replacing the then official red-and-blue flag of the Ukrainian SSR. A week after, on 24 th July, 1990 the Supreme Council of USSR adopted the Declaration of the State Sovereignty of Ukraine, the national blue-and-yellow flag was placed on the building of the City Council in Khreshchatyk next to the state flag of the USSR.
After the declaration of independence, Ukraine's national flag was raised above the Ukrainian Parliament, the Verkhovna Rada, on 4 th September, 1991 and on 28 th January, 1992 the Parliament approved the blue-and-yellow banner the State flag of Ukraine or the national flag of Ukraine.
Leonid Kuchma's decree in 2000 pronounces July 24 as the National Flag Day of Ukraine, when all the citizens can hoist the Ukrainian national flag and know the importance of the national flag of Ukraine. Presently the upper blue color signifies the open sky and the bottom yellow stripe symbolizes the wheat fields of Ukraine.
For more information on the national flag of Ukraine look up 123independenceday.com