Ukraine is observing the Day of the Marine Corps on May 23.

According to Ukrinform, this is the professional holiday of servicemen of the Marine Corps of the Naval Forces of the Armed Forces of Ukraine.

The holiday was first introduced in 2014 and was initially celebrated on November 16 between 2014 and 2017. It was originally linked to the date of approval and the first oath taken by Ukrainian marines in 1992.

The current date of celebration, May 23, was established in 2018 by Presidential Decree No. 145/2018 “On the Day of the Marine Corps of Ukraine.”

The date was chosen to honor the centenary of the Ukrainian Revolution of 1917–1921, regarded as the first experience of Ukrainian statehood in the 20th century.