"GPS can keep incredibly accurate time." Sure, as long as the satellites are up and you have line of sight. Aside from hostile actors, space debris, solar sto

"GPS can keep incredibly accurate time." Sure, as long as the satellites are up and you have line of sight. Aside from hostile actors, space debris, solar storms and other threats exist. We shouldn't take for granted that our satellites are just always going to be there. https://io9.gizmodo.com/what-would-happen-if-all-our-satellites-were-suddenly-d-1709006681 https://io9.gizmodo.com/what-would-happen-if-all-our-satelli...