Latest Contributions by BillFox

Google DeepMind's AI program learns human navigation skills ... View more

Are human brains unique? ... View more

Geospatial Tracking ... View more

Where to See Some of the World’s Oldest and Most Interesting Maps ... View more

The Unlikely History of the Origins of Modern Maps ... View more

Naval Oceanography Portal The United States Naval Meteorology and Oceanography Command (NMOC) provides critical information from the ocean depths to the most distant reaches of space, meeting needs in the military, scientific, and civilian communities.  GPS Week Number Rollover GPS Week Number Rollover — Naval Oceanography Portal GPS Week Number Rollover The GPS Week Number count began at approximately midnight on the evening of 05 January 1980 / morning of 06 January 1980. Since that time, the count has been incremented by 1 each week, and broadcast as part of the GPS message. The GPS Week Number field is modulo 1024. This means that at the completion of week 1023, the GPS week number rolled over to 0 on midnight GPS Time of the evening of 21 August 1999 / morning of 22 August 1999. Note that this corresponded to 23:59:47 UTC on 21 August 1999.   Week beginning at 0000 GPS Time on  GPS Week Number broadcast by satellites 08 Aug 1999 1022 15 Aug 1999 1023 22 Aug 1999 0 29 Aug 1999 1 24 Mar 2019 1022 31 Mar 2019 1023 07 Apr 2019 0 14 Apr 2019 1   It is the responsibility of the user (i.e., user equipment or software) to account for the previous 1024 weeks. Depending upon the manufacturer of your GPS receiver, you may or may not have been effected by the GPS Week Number Rollover on 22 August 1999. Some receivers may display inaccurate date information, some may also calculate incorrect navigation solutions. Contact the manufacturer of your GPS receiver if you have been effected by the GPS week number rollover. Contacts for some GPS receiver manufacturers can be found at the GPS World website. For more information, please refer to the following websites: Military users: GPS Joint Program Office Civilian users: U.S. Coast Guard Navigation Center. Homeland Security - GPS Week Number Roll Over (WNRO) Here's why your GPS could go haywire this weekend ... View more

Reference: Human Brain WebGIS  Jay Johnson, GISP‌ Joseph Kerski‌ ‌ (Web GIS) curriculum modernization interest group  Reference: Lateral Thinking is the Step by Step approach to Creativity ... View more

Any details you can provide will be appreciated. Thank you, ... View more