USNO (United States Naval Observatory)

The United States Naval Observatory (USNO) is a scientific institution that provides precise timekeeping and celestial data. It plays a key role in maintaining the official time for the United States, including Coordinated Universal Time (UTC), which is essential for navigation, satellite systems, and global communications. USNO also tracks the positions of stars and planets, supporting astronomical research and navigation. Its accurate timing and celestial observations underpin modern technologies like GPS and ensure the reliability of time-dependent systems used worldwide.