6 ms·

http://www.usno.navy.mil/USNO/time/gps/usno-gps-time-transfer http://www.usno.navy.mil/USNO/time/gps/usno-gps-time-transfe... says: "The GPS epoch is 0000 UT (m

by charriu 11y ago

http://www.usno.navy.mil/USNO/time/gps/usno-gps-time-transfer http://www.usno.navy.mil/USNO/time/gps/usno-gps-time-transfe... says: "The GPS epoch is 0000 UT (midnight) on January 6, 1980." So no, gps time is not defined before 1980.

protomyth 11y ago
So, in the time period GPS is defined it contains no leap seconds.
- dfc 11y ago
  If that is the case why is it not the same as TAI?
  - deleted 11y ago
    [deleted]
  - filmor 11y ago
    The GPS signal carries information about the GPS vs. UTC drift in a 1 byte field. As said, my guess is that they just wanted to maximise the use of this field by setting it to 0 instead of 19 at the beginning.