diff --git a/pkgs/default.nix b/pkgs/default.nix

index 8f1a76e6f6002f6358e3ffeb5c79afe2f220cbef..612abdc469e80d8c639173d0227f64de9bd527a7 100644

--- a/pkgs/default.nix

+++ b/pkgs/default.nix

@@ -261,6 +261,7 @@

 gnsstk = callPackage ./gnss/gnsstk { };

 gnsstk-apps = callPackage ./gnss/gnsstk-apps { };

 gps-sdr-sim = callPackage ./gnss/gps-sdr-sim { };

• gpsdate = callPackage ./gnss/gpsdate { };

 rtklib = callPackage ./gnss/rtklib { };

 visualgps = libsForQt5.callPackage ./gnss/visualgps { };

diff --git a/pkgs/gnss/gpsdate/clock_settime.patch b/pkgs/gnss/gpsdate/clock_settime.patch

new file mode 100644

index 0000000000000000000000000000000000000000..ac0cd3d70ed4aa221434d32f5a4e3f57fa6f7097

--- /dev/null

+++ b/pkgs/gnss/gpsdate/clock_settime.patch

@@ -0,0 +1,19 @@

+diff --git i/gpsdate.c w/gpsdate.c

+index 969bbdc..fe10276 100644

+--- i/gpsdate.c

++++ w/gpsdate.c

+@@ -104,10 +104,11 @@ static void process_message(const char *msgid, const char **data)

•   	t->tm_sec = seconds;
  

•   	/* Set new system time: */
  

+- time_t gps_time = mktime(t);

+- gps_time += t->tm_gmtoff;

++ struct timespec gps_time;

++ gps_time.tv_sec = mktime(t) + t->tm_gmtoff;

++ gps_time.tv_nsec = 0;

+- if (stime(&gps_time) == 0) {

++ if (clock_settime(CLOCK_REALTIME, &gps_time) == 0) {

•   		printf("Successfully updated local time.\n");
  

•   		date_changed = true;
  

•   	} else {
  

diff --git a/pkgs/gnss/gpsdate/default.nix b/pkgs/gnss/gpsdate/default.nix

new file mode 100644

index 0000000000000000000000000000000000000000..2ea2e49ccbf3820abfa199650a545db3013ce7b7

--- /dev/null

+++ b/pkgs/gnss/gpsdate/default.nix

@@ -0,0 +1,27 @@

+{ lib, stdenv, fetchFromGitHub }:

+stdenv.mkDerivation (finalAttrs: {

• pname = "gpsdate";

• version = "2019-12-02";

• src = fetchFromGitHub {

• owner = "adamheinrich";

• repo = "gpsdate";

• rev = "3e48ab58b73485d08e9f4d48054d5e7379e05805";

• hash = "sha256-h/XxQjjelUPYhIuJybZZm/bL07nj242utmYNCwTNw9w=";

• };

• patches = [ ./clock_settime.patch ];

• installPhase = ''

• install -Dm755 gpsdate -t $out/bin

• '';

• meta = with lib; {

• description = "Simple tool for fetching date and time from a GPS receiver and saving it as a local time";

• inherit (finalAttrs.src.meta) homepage;

• license = licenses.gpl3Plus;

• maintainers = [ maintainers.sikmir ];

• platforms = platforms.unix;

• };

+})