Energy Industry Day, also known as the Day of Energy Industry Workers or Power Engineer’s Day, is observed in several post-Soviet states, including Russia, Ukraine, Kyrgyzstan, Belarus, Armenia, and Tajikistan, every December 22. This professional holiday was officially established in May 1966 to commemorate the adoption of the State Plan for the Electrification of Russia (GOELRO) in 1920, which laid the foundation for the country's power industry. The day recognizes the contributions of energy industry workers to economic development and the improvement of daily life. Celebrations typically include awards ceremonies and professional events to honor the dedication and hard work of those in the energy sector. While most of these countries celebrate on December 22, Kazakhstan observes the holiday on the third Sunday of December, and Turkmenistan celebrates it on the second Saturday of September.