diff --git a/x11/Makefile b/x11/Makefile
index 3d5c648cd3d9..038785444fd2 100644
--- a/x11/Makefile
+++ b/x11/Makefile
@@ -105,6 +105,7 @@
     SUBDIR += guake
     SUBDIR += gxkb
     SUBDIR += havoc
+    SUBDIR += hamclock
     SUBDIR += hhpc
     SUBDIR += hs-xmobar
     SUBDIR += hsetroot
diff --git a/x11/hamclock/Makefile b/x11/hamclock/Makefile
new file mode 100644
index 000000000000..1c62811034b1
--- /dev/null
+++ b/x11/hamclock/Makefile
@@ -0,0 +1,42 @@
+PORTNAME=	hamclock
+PORTVERSION=	2.78
+CATEGORIES=	x11
+MASTER_SITES=	https://www.clearskyinstitute.com/ham/HamClock/
+DISTNAME=	ESPHamClock
+
+MAINTAINER=	acm@FreeBSD.org
+COMMENT=	Handy clock with features for amateur radio operators
+
+LIB_DEPENDS=	libcurl.so:ftp/curl
+
+USES=		desktop-file-utils gmake xorg zip
+USE_XORG=	x11
+
+OPTIONS_SINGLE=	RESOLUTION
+OPTIONS_SINGLE_RESOLUTION=SIZE1 SIZE2 SIZE3 SIZE4
+SIZE1_DESC=	Use 800x440 resolution
+SIZE2_DESC=	Use 1600x960 resolution
+SIZE3_DESC=	Use 2400x1440 resolution
+SIZE4_DESC=	Use 3200x1920 resolution
+OPTIONS_DEFAULT=	SIZE1
+
+SIZE1_ALL_TARGET=	hamclock-800x480
+SIZE2_ALL_TARGET=	hamclock-1600x960
+SIZE3_ALL_TARGET=	hamclock-2400x1440
+SIZE4_ALL_TARGET=	hamclock-3200x1920
+
+PLIST_FILES=	bin/hamclock \
+		share/applications/hamclock.desktop \
+		share/icons/hicolor/48x48/apps/hamclock.png
+
+post-patch:
+	${REINPLACE_CMD} -e 's|CXX =|CXX ?=|g' ${WRKSRC}/ArduinoLib/Makefile
+	${REINPLACE_CMD} -e 's|/home/pi/.hamclock/||g' ${WRKSRC}/${PORTNAME}.desktop
+
+do-install:
+	@${MKDIR} ${STAGEDIR}${PREFIX}/share/icons/hicolor/48x48/apps
+	${INSTALL_PROGRAM} ${WRKSRC}/${ALL_TARGET} ${STAGEDIR}${PREFIX}/bin/${PORTNAME}
+	${INSTALL_DATA} ${WRKSRC}/${PORTNAME}.png ${STAGEDIR}${PREFIX}/share/icons/hicolor/48x48/apps/${PORTNAME}.png
+	${INSTALL_DATA} ${WRKSRC}/${PORTNAME}.desktop ${STAGEDIR}${PREFIX}/share/applications/${PORTNAME}.desktop
+
+.include <bsd.port.mk>
diff --git a/x11/hamclock/distinfo b/x11/hamclock/distinfo
new file mode 100644
index 000000000000..eaf89ddf09f9
--- /dev/null
+++ b/x11/hamclock/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1653204084
+SHA256 (ESPHamClock.zip) = 7b194bd0228c5a05ede1833bc588ec2197d1c66ebd68dcda184bb5e7e02f9b8a
+SIZE (ESPHamClock.zip) = 1280434
diff --git a/x11/hamclock/files/patch-ESPHamClock.ino b/x11/hamclock/files/patch-ESPHamClock.ino
new file mode 100644
index 000000000000..7a90ed213f30
--- /dev/null
+++ b/x11/hamclock/files/patch-ESPHamClock.ino
@@ -0,0 +1,12 @@
+--- ESPHamClock.ino.orig	2022-04-30 15:37:10.367129000 -0500
++++ ESPHamClock.ino	2022-04-30 15:37:48.165833000 -0500
+@@ -1,6 +1,9 @@
+ /* HamClock
+  */
+ 
++#if defined(__FreeBSD__)
++#include <execinfo.h>
++#endif
+ 
+ // glue
+ #include "HamClock.h"
diff --git a/x11/hamclock/files/patch-Makefile b/x11/hamclock/files/patch-Makefile
new file mode 100644
index 000000000000..2ca33b392167
--- /dev/null
+++ b/x11/hamclock/files/patch-Makefile
@@ -0,0 +1,28 @@
+--- Makefile.orig	2022-03-30 19:58:30.000000000 -0500
++++ Makefile	2022-04-30 15:52:35.521899000 -0500
+@@ -8,10 +8,11 @@
+ .PHONY: clean clobber help
+ 
+ # build flags common to all options and architectures
+-CXXFLAGS = -IArduinoLib -I. -g -O2 -Wall -DARDUINO=100 -pthread -std=c++0x
++CXXFLAGS ?= -g -O2 -Wall
++CXXFLAGS += -IArduinoLib -I. -DARDUINO=100 -std=c++0x
+ LDXXFLAGS = -LArduinoLib -g -pthread
+ LIBS = -lpthread -larduino
+-CXX = g++
++CXX ?= g++
+ 
+ 
+ # macOS does not have X11 by default; this assumes XQuartz has been installed
+@@ -20,6 +21,11 @@
+     LDXXFLAGS += -L/opt/X11/lib
+ endif
+ 
++ifeq ($(shell uname -s), FreeBSD)
++    CXXFLAGS += -I$(LOCALBASE)/include
++    LDXXFLAGS += -L$(LOCALBASE)/lib
++    LIBS = -pthread -larduino -lexecinfo
++endif
+ 
+ # FreeBSD needs libgpio
+ ifeq ($(shell [ -r /usr/include/libgpio.h ]; echo $$?), 0)
diff --git a/x11/hamclock/pkg-descr b/x11/hamclock/pkg-descr
new file mode 100644
index 000000000000..adb099ae242f
--- /dev/null
+++ b/x11/hamclock/pkg-descr
@@ -0,0 +1,6 @@
+HamClock is a handy clock with features for amateur radio operators! One screen
+shows your local time in 12H and 24H format along with UTC in large, easy to
+read text. If your location is available, your grid square, local sunrise and
+sunset are also displayed
+
+WWW: https://www.clearskyinstitute.com/ham/HamClock/