diff --git a/lib/Subtitle/BASE.pm b/lib/Subtitle/BASE.pm
index 838137c..b7f4734 100644
--- a/lib/Subtitle/BASE.pm
+++ b/lib/Subtitle/BASE.pm
@@ -72,7 +72,7 @@ sub build_timing {
   $sec  = int($rest / 1);
   $msec = sprintf "%.${prec}f", ($rest - ($sec * 1));
   $msec =~ s/^0\.//o;
-  return sprintf("%d:%02d:%02d.%s", $hrs, $min, $sec, $msec);
+  return sprintf($self->{timing_fmt}, $hrs, $min, $sec, $msec);
 }
 
 sub trim {
diff --git a/lib/Subtitle/SRT.pm b/lib/Subtitle/SRT.pm
index 78a67ef..ca84972 100644
--- a/lib/Subtitle/SRT.pm
+++ b/lib/Subtitle/SRT.pm
@@ -15,6 +15,7 @@ sub new {
     %args,
     events => [],
     log    => [],
+    timing_fmt => "%02d:%02d:%02d,%s",
   };
 
   return bless($self, $class);
diff --git a/lib/Subtitle/SSA.pm b/lib/Subtitle/SSA.pm
index bbbe018..020e56d 100644
--- a/lib/Subtitle/SSA.pm
+++ b/lib/Subtitle/SSA.pm
@@ -29,6 +29,7 @@ sub new {
     styles  => [],
     events  => [],
     log     => [],
+    timing_fmt => "%d:%02d:%02d.%s",
   };
 
   return bless($self, $class);