Index: uspace/app/date/date.c
===================================================================
--- uspace/app/date/date.c	(revision ce1df04f4ef772bb19ef81b2f55e1f9c3359319f)
+++ uspace/app/date/date.c	(revision 675fcbd7430ca9b6ae3bcc232f5d6269225dfc5d)
@@ -41,5 +41,4 @@
 static int read_date_from_arg(char *wdate, struct tm *t);
 static int read_time_from_arg(char *wdate, struct tm *t);
-static int read_num_from_str(char *str, size_t len, int *n);
 static int tm_sanity_check(struct tm *t);
 static bool is_leap_year(int year);
@@ -202,4 +201,5 @@
 {
 	int rc;
+	uint32_t tmp;
 
 	if (str_size(wdate) != 10) /* str_size("DD/MM/YYYY") == 10 */
@@ -211,15 +211,19 @@
 	}
 
-	rc = read_num_from_str(&wdate[0], 2, &t->tm_mday);
+	rc = str_uint32_t(&wdate[0], NULL, 10, false, &tmp);
 	if (rc != EOK)
 		return rc;
 
-	rc = read_num_from_str(&wdate[3], 2, &t->tm_mon);
+	t->tm_mday = tmp;
+
+	rc = str_uint32_t(&wdate[3], NULL, 10, false, &tmp);
 	if (rc != EOK)
 		return rc;
-	t->tm_mon--;
-
-	rc = read_num_from_str(&wdate[6], 4, &t->tm_year);
-	t->tm_year -= 1900;
+
+	t->tm_mon = tmp - 1;
+
+	rc = str_uint32_t(&wdate[6], NULL, 10, false, &tmp);
+	t->tm_year = tmp - 1900;
+
 	return rc;
 }
@@ -234,4 +238,5 @@
 	size_t len = str_size(wtime);
 	bool sec_present = len == 8;
+	uint32_t tmp;
 
 	/* str_size("HH:MM") == 5 */
@@ -246,35 +251,23 @@
 		return EINVAL;
 
-	rc = read_num_from_str(&wtime[0], 2, &t->tm_hour);
+	rc = str_uint32_t(&wtime[0], NULL, 10, false, &tmp);
 	if (rc != EOK)
 		return rc;
 
-	rc = read_num_from_str(&wtime[3], 2, &t->tm_min);
+	t->tm_hour = tmp;
+
+	rc = str_uint32_t(&wtime[3], NULL, 10, false, &tmp);
 	if (rc != EOK)
 		return rc;
 
-	if (sec_present)
-		rc = read_num_from_str(&wtime[6], 2, &t->tm_sec);
-	else
+	t->tm_min = tmp;
+
+	if (sec_present) {
+		rc = str_uint32_t(&wtime[6], NULL, 10, false, &tmp);
+		t->tm_sec = tmp;
+	} else
 		t->tm_sec = 0;
 
 	return rc;
-}
-
-static int
-read_num_from_str(char *str, size_t len, int *n)
-{
-	size_t i;
-
-	*n = 0;
-
-	for (i = 0; i < len; ++i, ++str) {
-		if (!isdigit(*str))
-			return EINVAL;
-		*n *= 10;
-		*n += *str - '0';
-	}
-
-	return EOK;
 }