new file mode 100644
--- /dev/null
+++ b/min2time.c
@@ -0,0 +1,30 @@
+/**
+ * test/demos/min2time.c
+ * Copyright (C) 2008 Markus Broeker
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+
+int main (int argc, char **argv)
+{
+    int minutes;
+
+    if (argc == 2)
+        minutes = atoi (argv[1]);
+    else {
+        printf ("Enter the amount of minutes: ");
+        if (!scanf ("%d", &minutes))
+            return EXIT_FAILURE;
+    }
+
+    if ((minutes < 0) || !(minutes < INT_MAX))
+        return EXIT_FAILURE;
+
+    printf ("%.3d:%.2d:%.2d:%.2d (yy:dd:hh:mm)\n", minutes / 60 / 24 / 365, (minutes / (60 * 24) % 365),
+            (minutes / 60) % 24, minutes % 60);
+
+    return EXIT_SUCCESS;
+}