Naval Observatory

American  

noun

1. an astronomical observatory located in Washington, D.C., operated by the U.S. government, and responsible for the U.S. time service.

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Example Sentences

The Vances are the youngest family to occupy the vice presidency since Al Gore’s young children lived at the Naval Observatory.

From The Wall Street Journal • Jan. 20, 2026

The vice president and his wife also live at a sprawling mansion on the grounds of the Naval Observatory.

From Salon • Nov. 26, 2025

She now resides in Los Angeles when she is not staying at the vice president’s official residence at the Naval Observatory in Washington.

From Los Angeles Times • Jul. 21, 2024

Demetrios Matsakis, former chief scientist for time services at the US Naval Observatory, told AFP that "Earth is too unpredictable to be sure" if a negative leap second would be needed any time soon.

From BBC • Mar. 28, 2024

Naval Observatory in Flagstaff, Arizona, was making a routine examination of photographic images of Pluto when he saw that there was something there–something blurry and uncertain but definitely other than Pluto.

From "A Short History of Nearly Everything" by Bill Bryson