An official website of the United States government
Here's how you know
Official websites use .mil
website belongs to an official U.S. Department of Defense organization in the United States.
Secure .mil websites use HTTPS
means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.
Skip to main content (Press Enter).
Mission & Vision
Naval Oceanographic Office
Fleet Numerical Meteorology & Oceanography Center
United States Naval Observatory
News from the Naval Observatory
Earth Orientation Department
USNO Earth Orientation Products
Contents of Bulletin A
USNO GPS Products
GPS User Information
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
Senior Enlisted Advisor
Naval Oceanography Operations Command
Fleet Weather Center - Norfolk
Fleet Weather Center - San Diego
Joint Typhoon Warning Center
Public Use of Limitations
Naval Meteorology and Oceanography Command
Captain David Wolynski
Commanding Officer, Naval Oceanographic Officer
13 June 2022
Capt. David Wolynski was raised in Cocoa, Fla., and graduated from the United States Naval Academy with a bachelor’s degree in political science. He earned a master’s degree in strategic intelligence with dual concentrations in terrorism and Middle Eastern studies from the National Intelligence University. He also attended the Naval War College and Joint Forces Staff College.
Upon commissioning as a surface warfare officer in 1997, he served as the ordnance officer aboard USS Laboon (DDG 58). He then served as the officer in charge of the USS Enterprise (CVN 65) Afloat Planning Systems Detachment (Tomahawk Strike Cell), conducting the Tomahawk cruise missile strikes that began Operation Enduring Freedom in October 2001.
After transferring to the naval intelligence community, Wolynski served as the Iraq analyst for U.S. Naval Forces Central Command/U.S. Fifth Fleet during the launch of Operation Iraqi Freedom in March 2003. He then served as the officer in charge of the Joint Intelligence Center (Forward) for U.S. Special Operations Command Central, Camp As-Sayliyah, Qatar, from 2005 to 2006. He was also the intelligence officer for Amphibious Squadron FIVE / Boxer Amphibious Ready Group embarked on USS Boxer (LHD 4) and the intelligence officer assigned to USS George Washington (CVN 73) while the ship was homeported in Yokosuka, Japan.
Wolynski’s shore duty assignments include serving as intelligence briefer for the Chief of Naval Operations and Secretary of the Navy; joint intelligence officer for the Joint Advanced Warfighting Program at the
Institute for Defense Analyses; senior military intelligence officer for China at the Office of Naval Intelligence; faculty member and chair, Defense Intelligence Department at the National Intelligence
University; and Director, SPECTRUM Information Warfare Division at the Nimitz Operational Intelligence Center.
Wolynski served as the assistant chief of staff (intelligence) and deputy director, Maritime Operations Center, for U.S. Second Fleet in Norfolk, Va., before reporting to NAVOCEANO as executive officer in August 2021. He took command of NAVOCEANO in May 2022.
Personal awards include the Legion of Merit, Defense Meritorious Service Medal, the Meritorious Service Medal and several other personal and service awards. During his afloat tour on USS George Washington (CVN 73), his Intelligence Department was recognized as the top in the Pacific Fleet with the awarding of U.S. Naval Air Forces’ Excellence in Intelligence and Information Warfare Award two consecutive years.
Naval Oceanographic Office (NAVOCEANO)
DoD Accessibility/Section 508
No Fear Act
Plain Writing Act
Veterans Crisis Line
DoD Safe Helpline
Commander, Naval Meteorology and Oceanography Command | 1100 Balch Blvd. | Stennis Space Center, Mississippi 39529
Official U.S. Navy Website