diff --git a/src/bigclock.h b/src/bigclock.h
index 2de834a..2236d2c 100644
--- a/src/bigclock.h
+++ b/src/bigclock.h
@@ -109,6 +109,14 @@ uint32_t CLOCK_E[] = {
 	_,_,_,_,_
 };
 
+uint32_t CLOCK_D[] = {
+	_,_,_,_,_,
+	_,_,_,_,_,
+	_,X,X,X,_,
+	_,_,_,_,_,
+	_,_,_,_,_
+};
+
 #endif
 
 #undef X
@@ -140,6 +148,8 @@ static inline uint32_t* CLOCK_N(char c)
 			return CLOCK_9;
 		case ':':
 			return CLOCK_S;
+    case '-':
+      return CLOCK_D;
 		default:
 			return CLOCK_E;
 	}
diff --git a/src/config.c b/src/config.c
index f7a1c00..50e62cc 100644
--- a/src/config.c
+++ b/src/config.c
@@ -162,6 +162,7 @@ void config_load(const char *cfg_path)
 		{"asterisk", &config.asterisk, config_handle_char},
 		{"bg", &config.bg, config_handle_u8},
 		{"bigclock", &config.bigclock, config_handle_bool},
+    {"bigclock_format", &config.bigclock_format, config_handle_str},
 		{"blank_box", &config.blank_box, config_handle_bool},
 		{"blank_password", &config.blank_password, config_handle_bool},
 		{"clock", &config.clock, config_handle_str},
diff --git a/src/config.h b/src/config.h
index 6a54f60..376f099 100644
--- a/src/config.h
+++ b/src/config.h
@@ -66,6 +66,7 @@ struct config
 	char asterisk;
 	uint8_t bg;
 	bool bigclock;
+  char* bigclock_format;
 	bool blank_box;
 	bool blank_password;
 	char* clock;
diff --git a/src/draw.c b/src/draw.c
index 0679244..4855a77 100644
--- a/src/draw.c
+++ b/src/draw.c
@@ -244,14 +244,15 @@ void draw_bigclock(struct term_buf* buf)
     {
         return;
     }
-
-	int xo = buf->width / 2 - (5 * (CLOCK_W + 1)) / 2;
+  uint32_t bigclocklength = strlen(config.bigclock_format);
+	
+  int xo = (buf->width / 2) - bigclocklength * (CLOCK_W+1) / 2;
 	int yo = (buf->height - buf->box_height) / 2 - CLOCK_H - 2;
 
-	char* clockstr = time_str("%H:%M", 6);
+	char* clockstr = time_str(config.bigclock_format, 32);
 	struct tb_cell* clockcell;
 
-	for (int i = 0; i < 5; i++)
+	for (int i = 0; i < bigclocklength; i++)
 	{
 		clockcell = clock_cell(clockstr[i]);
 		alpha_blit(tb_cell_buffer(), xo + i * (CLOCK_W + 1), yo, CLOCK_W, CLOCK_H, clockcell);