Day in Tech History

January 6: GPS week zero

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Day in Tech History

Jeffrey Powers

Madison, WI

Description: For the Tech History Geek in all of us

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January 6: GPS week zero

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GPS

1980 – The first Global Positioning System (GPS) week zero starts. In the GPS system, dates are express as a number for the week of the year and one for the day of the week – For instance, we are in Cycle 1, Week 0541 and Day 02. GPS will recycle every 1,024 weeks (19.6 years).

Wikazine – Full show notes for January 6

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