Sticky Dialog Bar | Support | GIS Dictionary

A to Z GIS | Explore this related guide, featuring updated terms and graphics and developed in coordination with Esri’s GIS Dictionary team.

Learn more about A to Z GIS

GIS Dictionary

Browse dictionary

GPS time

URL copied Share URL
  1. [remote sensing, measurement] A continuous time scale, without leap seconds, defined by the GPS control segment and maintained by atomic clocks onboard monitor stations and satellites. It started (starting epoch) at 0h UTC (coordinated universal time, midnight) 5-6 January 1980 (6.d0). GPS time is synchronized with the U.S. Naval Observatory's UTC (USNO) at a 1 microsecond level and kept within 25 ns.

See also