user120379: According to this web site, the timing from a system like GPS is essential to "financial networks [which] rely on precision timing for synchronization and operational efficiency."  Is the Bitcoin network one of those?

user24925: Bitcoin needs approximately sundial time accuracy to operate. Computers have their own free running clocks which provide more than enough accuracy in the absence of other references, and NTP sources which are terrestrial rather than GPS based.
nLockTime and other internal tools are not based on local clocks, as there’s absolutely no guarantee that anybody in the network actually has an accurate one.
A situation in which time sync from GPS, GNSS, Baidu and Galileo were all unavailable would be rather apocalyptic anyway and would transcend the availability of Bitcoin.

120379: <p>According to <a href="https://www.gps.gov/applications/timing/" rel="nofollow noreferrer">this</a> web site, the timing from a system like GPS is essential to &quot;financial networks [which] rely on precision timing for synchronization and operational efficiency.&quot;  Is the Bitcoin network one of those?</p>
 24925: <p>Bitcoin needs approximately sundial time accuracy to operate. Computers have their own free running clocks which provide more than enough accuracy in the absence of other references, and NTP sources which are terrestrial rather than GPS based.</p>
<p><code>nLockTime</code> and other internal tools are not based on local clocks, as there’s absolutely no guarantee that anybody in the network actually has an accurate one.</p>
<p>A situation in which time sync from GPS, GNSS, Baidu and Galileo were all unavailable would be rather apocalyptic anyway and would transcend the availability of Bitcoin.</p>
