The GpsLocationProvider in Android reads /etc/gps.conf in order to determine the NTP server to poll.
The default configuration is:
NTP_SERVER=north-america.pool.ntp.orgXTRA_SERVER_1=http://xtra1.gpsonextra.net/xtra.binXTRA_SERVER_2=http://xtra2.gpsonextra.net/xtra.binXTRA_SERVER_3=http://xtra3.gpsonextra.net/xtra.bin
I've updated my NTP SERVER to read from Singapore's NTP server: sg.pool.ntp.org instead.
In 2017, with the release of Delphi 10.2 Tokyo, Embarcadero introduced a specialized implementation of the Observer pattern into the System.Classes unit. While it has been in the wild for 9 years, it remains a "hidden" architecture for many, primarily because it serves as the invisible engine behind LiveBindings. Other than live bindings, you can also use the Observer pattern as a way to update component settings to the Windows registry, an .ini file, or persist it elsewhere.
System.Classes