diff --git a/ttyclock.c b/ttyclock.c
index f0bddd5..544e566 100644
--- a/ttyclock.c
+++ b/ttyclock.c
@@ -158,7 +158,7 @@ update_hour(void)
      /* Set date string */
      strftime(ttyclock->date.datestr,
          sizeof(ttyclock->date.datestr),
-         "%d/%m/%Y",
+         ttyclock->option.format,
          ttyclock->tm);
 
      /* Set seconds */
@@ -403,13 +403,18 @@ main(int argc, char **argv)
                {"twelve",  0, NULL, 't'},
                {"rebound", 0, NULL, 'r'},
                {"center",  0, NULL, 'c'},
+               {"format",  1, NULL, 'f'},
                {NULL,      0, NULL, 0}
           };
 
      /* Alloc ttyclock */
      ttyclock = malloc(sizeof(ttyclock_t));
 
-     while ((c = getopt_long(argc,argv,"tvsrcih",
+     /* Date format */
+     ttyclock->option.format = malloc(sizeof(char)*100);
+     strncpy(ttyclock->option.format, "%d/%m/%Y", 100);
+
+     while ((c = getopt_long(argc,argv,"tvsrcihf:",
                              long_options, NULL)) != -1)
      {
           switch(c)
@@ -442,6 +447,9 @@ main(int argc, char **argv)
           case 'r':
                ttyclock->option.rebound = True;
                break;
+          case 'f':
+               strncpy(ttyclock->option.format, optarg, 100);
+               break;
           }
      }
 
diff --git a/ttyclock.h b/ttyclock.h
index 1486ac7..e7dc623 100644
--- a/ttyclock.h
+++ b/ttyclock.h
@@ -55,6 +55,7 @@
    -c, --center     Set the clock at the center of the terminal \n\
    -t, --twelve     Set the hour in 12h format                  \n\
    -r, --rebound    Do rebound the clock                        \n\
+   -f, --format     Set the date format                         \n\
    -v, --version    Show tty-clock version                      \n\
    -i, --info       Show some info about tty-clock              \n\
    -h, --help       Show this page                              "
@@ -74,6 +75,7 @@ typedef struct
           Bool twelve;
           Bool center;
           Bool rebound;
+          char *format;
      } option;
 
      /* Clock geometry */