Background Information on GPS Week Number Rollover

• Notice to All Mariners Who Use GPS Equipment
  U.S. Coast Guard Navigation Center
   

• "GPS Week Number to Rollover"
  Schriever Air Force Base
   

• Memorandum for U.S. Owners and Operators Using GPS to Obtain UTC Time
  U.S. Department of Homeland Security
   

• GPS Week Number Rollover on April 6, 2019
  GPS.gov
   

• Time — The Invisible Utility (Corporate Level Info Sheet)
  U.S. Department of Homeland Security