diff --git a/Makefile b/Makefile
index a6049c5..3dc9c35 100644
--- a/Makefile
+++ b/Makefile
@@ -37,7 +37,7 @@ endif
 
 C_FLAGS += -fpic
 
-C_FLAGS += -O0 -g -Wall
+C_FLAGS += -O0 -ggdb3 -Wall
 CPP_FLAGS += $(addprefix -I, $(INCLUDES))
 
 CHECK_FLAGS = $(addprefix -I,$(filter-out $(PREFIX)/include/,$(INCLUDES)))
@@ -116,11 +116,11 @@ check: $(CC_SRCS)
 
 $(UNIT_TEST_TARGET): $(UNIT_TEST_OBJS) $(THIS_MAKEFILE)
 	@mkdir -p $(BIN_DIR)/$(UNIT_TEST_SRC_DIR)
-	$(CC) $(CC_FLAGS) $(LD_FLAGS) $(UNIT_TEST_OBJS) -o $@
+	$(CC) $(C_FLAGS) $(LD_FLAGS) $(UNIT_TEST_OBJS) -o $@
 
 $(TARGET): $(OBJS) $(THIS_MAKEFILE)
 	@mkdir -p $(BIN_DIR)
-	$(CC) $(CC_FLAGS) $(LD_FLAGS) $(OBJS) $(addprefix -l,$(LIBS)) -o $@
+	$(CC) $(C_FLAGS) $(LD_FLAGS) $(OBJS) $(addprefix -l,$(LIBS)) -o $@
 
 .PRECIOUS: $(OBJ_DIR)/%.d
 $(OBJ_DIR)/%.d: $(SRC_DIR)/%.c
diff --git a/src/main.c b/src/main.c
index 5548ad9..fbb6506 100644
--- a/src/main.c
+++ b/src/main.c
@@ -4,6 +4,7 @@
 #include <unistd.h>
 #include <stdio.h>
 #include <math.h>
+#include <time.h>
 
 #include "board.h"
 #include "driver.h"
@@ -90,28 +91,40 @@ int main(void)
     double dest_x;
     double dest_y;
 
+    time_t T;
+    struct  tm tm;
+
     while(1) {
         img_load(image, clock_face, 240 * 240);
 
+        // just to shown image orientation
+        img_draw_line(image, 10, 10, 12, 12, 0x00f8);
+        img_draw_line(image, 10, 11, 12, 12, 0x00f8);
+        img_draw_line(image, 10, 12, 12, 12, 0x00f8);
+
+        T = time(NULL);
+        tm = *localtime(&T);
+
+        min_angle = (360 / 60) * tm.tm_min;
+        if(min_angle >= 360.0) {
+            min_angle -= 360.0;
+        }
+
         dest_x = root_x + min_len * cos(min_angle * M_PI / 180);
         dest_y = root_y + min_len * sin(min_angle * M_PI / 180);
         img_draw_line(image, (uint16_t)root_x, (uint16_t)root_y, (uint16_t)dest_x, (uint16_t)dest_y, 0xffff);
-        min_angle += 360 / 60;
+
+        std_angle = 0.5 * (60 * tm.tm_hour + tm.tm_min);
+        if(std_angle >= 360.0) {
+            std_angle -= 360.0;
+        }
 
         dest_x = root_x + std_len * cos(std_angle * M_PI / 180);
         dest_y = root_y + std_len * sin(std_angle * M_PI / 180);
         img_draw_line(image, (uint16_t)root_x, (uint16_t)root_y, (uint16_t)dest_x, (uint16_t)dest_y, 0xffff);
-        std_angle += 360.0 / (60 * 12);
 
         drv_write(&lcd_drv, (const char *)image, 240 * 240);
         sleep(1);
-
-        if(min_angle >= 360.0) {
-            min_angle -= 360.0;
-        }
-        if(std_angle >= 360.0) {
-            std_angle -= 360.0;
-        }
     }
 
     drv_close(&lcd_drv);