Russian Space Forces Day is observed in Russia on October 4, commemorating the anniversary of the launch of Sputnik 1, the first artificial Earth satellite, in 1957. This professional holiday was first celebrated in 1960 as the Day of the Command and Measurement Complex, marking the third anniversary of Sputnik's launch. The Russian Space Forces, officially formed in 2001, are responsible for informing military commanders of missile attacks and managing in-orbit space vehicles, as well as ballistic missile defense. The day serves to honor the contributions of the Space Forces to national defense and space exploration. Celebrations typically include recognition of the achievements of the Space Forces and their historical significance in the context of the space era.