diff --git a/src/libiso8601/parser.c b/src/libiso8601/parser.c
index 5209a27..40dc41f 100644
--- a/src/libiso8601/parser.c
+++ b/src/libiso8601/parser.c
@@ -548,7 +548,7 @@ done:
 
     if(hour == -1) {
         if(earliest && iso8601_from_clocktime(earliest, 0, 0, 0)) return -1;
-        if(latest && iso8601_from_clocktime(latest, 24, 0, 0)) return -1;
+        if(latest && iso8601_from_clocktime(latest, 23, 59, 59)) return -1;
         if(details) details->time_prec = iso8601_prec_none;
 
     } else if(sec != -1) {