tag:blogger.com,1999:blog-5782314588614780807.post3499361979896008115..comments2023-12-24T06:56:37.861+00:00Comments on David's Blog: Navigation – sextant and GPSDavidhttp://www.blogger.com/profile/09623766673384924120noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-5782314588614780807.post-4678292275497040642013-02-06T18:00:04.391+00:002013-02-06T18:00:04.391+00:00This all depends on the time in the clock of each ...This all depends on the time in the clock of each satellite being "right". There is a US Air Force base where the whole staff are responsible for setting these clocks. If the US decides to set them all fast (or slow) the positions shown by a GPS unit can be significantly wrong. It gives a real opportunity for the US to confuse us all!Robhttps://www.blogger.com/profile/06762922359522104127noreply@blogger.com