Us Naval Observatory

About the Author

The United States Naval Observatory (USNO), a premier scientific institution established in 1830, serves as the leading authority on positional astronomy and timekeeping for the U.S. Navy and the broader scientific community. Renowned for its meticulous astronomical calculations and publications, the USNO provides essential data for navigation, space operations, and global time standards. Its flagship publication, the Nautical Almanac, has been an indispensable tool for mariners and astronomers since 1855, offering precise ephemerides of celestial bodies to facilitate accurate celestial navigation. Through decades of rigorous research and observation, the USNO continues to advance our understanding of the cosmos, ensuring reliable resources for professionals worldwide while contributing to groundbreaking discoveries in astrophysics and geodesy.