Analysis of information sources in references of the Wikipedia article "Global Positioning System" in English language version.
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{{cite web}}: CS1 maint: deprecated archival service (link)Selective Availability ended a few minutes past midnight EDT after the end of May 1, 2000. The change occurred simultaneously across the entire satellite constellation.
{{cite web}}: CS1 maint: url-status (link)Selective Availability ended a few minutes past midnight EDT after the end of May 1, 2000. The change occurred simultaneously across the entire satellite constellation.