U.S. Naval Observatory / The Prime Meridian

U.S. Naval Observatory / The Prime Meridian (HM2D8O)

Location: Washington, DC 20037
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Country: United States of America
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N 38° 53.723', W 77° 3.082'

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Inscription
[Top plaque:]
U.S. Naval Observatory

Designed by LT James M. Gilliss in 1842, the U.S. Naval Observatory occupied this site from 1844 to 1893. In 1894 the domed structure became home to the Naval Museum of Hygiene. Eight years later the Naval Medical School moved here from Brooklyn, New York.

[Bottom plaque:]
The Prime Meridian

In the early 1850's the 0 degree meridian for the United States was established here. It passed through the center of the U.S. Naval Observatory's central dome. This Prime Meridian became the reference for determining the north-south boundaries of several western states.
Details
HM NumberHM2D8O
Tags
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Marker ConditionNo reports yet
Date Added Wednesday, January 2nd, 2019 at 10:01pm PST -08:00
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Locationbig map
UTM (WGS84 Datum)18S E 322099 N 4307167
Decimal Degrees38.89538333, -77.05136667
Degrees and Decimal MinutesN 38° 53.723', W 77° 3.082'
Degrees, Minutes and Seconds38° 53' 43.38" N, 77° 3' 4.92" W
Driving DirectionsGoogle Maps
Area Code(s)202
Which side of the road?Marker is on the right when traveling South
Closest Postal AddressAt or near 2430 E St NW, Washington DC 20037, US
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