diff --git a/contrib/index.md b/contrib/index.md
index e3a8a81..6aa8695 100644
--- a/contrib/index.md
+++ b/contrib/index.md
@@ -156,10 +156,12 @@ const prettyDate = (
     year = 'numeric',
     month = 'long',
     day = 'numeric',
+    timeZoneName = 'short'
   } = {}) => {
-  return `${date.toLocaleDateString(undefined, {weekday, year, month, day})} @ ${date.toLocaleTimeString()}`;
+  return `${date.toLocaleDateString(undefined, {weekday, year, month, day})} @ ${date.toLocaleTimeString(undefined, {timeZoneName})}`;
 };
 
+
 </script>
 
 <style>