diff --git a/.eleventy.js b/.eleventy.js
index e8040ab..548fa97 100644
--- a/.eleventy.js
+++ b/.eleventy.js
@@ -27,8 +27,8 @@ module.exports = function(eleventyConfig) {
     errorMode: "allow-fallback",
   });
 
-  eleventyConfig.addFilter("readableDate", dateObj => {
-    return DateTime.fromJSDate(dateObj, {zone: 'utc'}).toFormat("LLLL yyyy");
+  eleventyConfig.addFilter("readableDate", (dateObj, format = "dd LLLL yyyy") => {
+    return DateTime.fromJSDate(dateObj, {zone: 'utc'}).toFormat(format);
   });
 
   // https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-date-string
diff --git a/_includes/postslist.njk b/_includes/postslist.njk
index 84219af..dd8c686 100644
--- a/_includes/postslist.njk
+++ b/_includes/postslist.njk
@@ -2,7 +2,7 @@
 {% for post in postslist | reverse %}
   <li class="postlist-item{% if post.url == url %} postlist-item-active{% endif %}">
     <a href="{{ post.url | url }}" class="postlist-link">{% if post.data.title %}{{ post.data.title }}{% else %}<code>{{ post.url }}</code>{% endif %}</a>
-    <time class="postlist-date" datetime="{{ post.date | htmlDateString }}">{{ post.date | readableDate }}</time>
+    <time class="postlist-date" datetime="{{ post.date | htmlDateString }}">{{ post.date | readableDate("LLLL yyyy") }}</time>
   </li>
 {% endfor %}
 </ol>