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Earth Orientation Department
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Contents of Bulletin A
USNO GPS Products
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USNO VLBI-based Products
VLBI Correlator Data
VLBI-based Earth Orientation Parameters (EOP)
Earth Orientation Information Center
General Information about Earth Orientation
Frequently Asked Questions About Earth Orientation
What Is Earth Orientation?
What Is Polar Motion?
What does the Earth rotation coordinate measure?
What is the Celestial Pole Offset?
What is a Leap Second?
How do we measure Earth Orientation?
What causes variations in the Earth's orientation?
Who uses Earth orientation information?
Publications About Earth Orientation Products
Earth Orientation Software
Precise Time Department
The USNO Master Clock
The USNO Master Clock
Time Dissemination at the USNO
USNO Alternate Master Clock (AMC)
Cesium Atomic Clocks
Hydrogen Masers at the USNO
Rubidium Fountain Clocks
USNO Time Scales
International Time Scales and the BIPM
Definitions of Systems of Time
Global Positioning System
Global Positioning System Overview
USNO GPS Data Categories Explanation
CGGTTS Data Format
USNO GPS Time Transfer
GPS Information: SA, DGPS, Leap Seconds, etc.
GPS Week Number Rollover
GPS Timing Data and Information
USNO Format Explanation
USNO Computer Display Clocks
Two-Way Satellite Time Transfer (TWSTT)
Network Time Protocol (NTP)
US Eastern Time Zone NTP Servers
US Mountain Time Zone Servers
DoD Customer Servers
Astronomical Applications Department
Celestial Reference Frame Department
Naval Oceanography Operations Command
Fleet Weather Center - Norfolk
Fleet Weather Center - San Diego
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Public Use of Limitations
Naval Meteorology and Oceanography Command
Captain Erin E. O. Acosta
Commanding Officer, Fleet Weather Center Norfolk
03 June 2022
A native of Mechanicsburg, PA, Captain Acosta was commissioned through the U.S. Naval Academy in 2000.
Captain Acosta served four years at sea, including a tour as First Lieutenant aboard USS Decatur (DDG 73) and a tour as staff oceanographer, scheduler, and staff navigator for Carrier Strike Group TWO (CSG 2), embarked on USS George H. W. Bush. While attached to CSG 2, she participated in the Haitian earthquake response effort as the Navy Liaison Officer to Joint Task Force-Haiti, J35 Future Operations, in Port-au-Prince, Haiti.
Shore tours include Forecast Duty Officer and Command Duty Officer at the Naval European Meteorology and Oceanography Center in Rota, Spain; Joint Meteorology and Oceanography Officer at Combined Joint Task Force- Horn of Africa as an Individual Augmentee; Requirements Officer for the ISR Capabilities Division, Chief of Naval Operations Staff (OPNAV N2N6F2); Deputy Executive Assistant to the Oceanographer and Navigator of the Navy (OPNAV N2N6E); Executive Officer, Fleet Numerical Meteorology and Oceanography Center; and Senior Oceanography Assignment and Placement Officer, Navy Personnel Command. She also completed a special assignment as an associate fellow on the CNO’s Strategic Studies Group (SSG) in Newport, R.I., an innovation think tank for the Navy.
CAPT Acosta commanded Naval Oceanography Antisubmarine Warfare Center, Yokosuka, Japan. Education includes a B.S. in Physical Oceanography from the U.S. Naval Academy, and an M.S. in Meteorology and Physical Oceanography from the Naval Postgraduate School. Personal awards include Meritorious Service Medals, Joint Service Commendations Medal, Navy and Marine Corps Commendations Medal, Joint Service Achievement Medal, Navy and Marine Corps Achievement Medals, and various campaign and service awards.
CAPT Acosta is married to Mr. Dave Acosta of Annapolis, MD. They have two daughters.
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