diff --git a/bacnet-stack/datetime.mak b/bacnet-stack/datetime.mak
new file mode 100644
index 00000000..864a9de9
--- /dev/null
+++ b/bacnet-stack/datetime.mak
@@ -0,0 +1,31 @@
+#Makefile to build test case
+CC      = gcc
+BASEDIR = .
+#CFLAGS  = -Wall -I.
+# -g for debugging with gdb
+#CFLAGS  = -Wall -I. -g
+CFLAGS  = -Wall -I. -Itest -DTEST -DTEST_DATE_TIME -g
+
+SRCS = datetime.c \
+       test/ctest.c
+
+OBJS = ${SRCS:.c=.o}
+
+TARGET = datetime
+
+all: ${TARGET}
+ 
+${TARGET}: ${OBJS}
+	${CC} -o $@ ${OBJS} 
+
+.c.o:
+	${CC} -c ${CFLAGS} $*.c -o $@
+	
+depend:
+	rm -f .depend
+	${CC} -MM ${CFLAGS} *.c >> .depend
+	
+clean:
+	rm -rf core ${TARGET} $(OBJS) *.bak *.1 *.ini
+
+include: .depend