diff --git a/_config/filters.js b/_config/filters.js
index 4a8f348..37879aa 100644
--- a/_config/filters.js
+++ b/_config/filters.js
@@ -51,7 +51,7 @@ export default function(eleventyConfig) {
 	});
 
 	/* Human-readable dates */
-	eleventyConfig.addFilter("readableDate", (dateObj, format, zone) => {
+	eleventyConfig.addFilter("readableDate", (dateObj, zone) => {
 		return DateTime.fromJSDate(dateObj, { zone: zone || "utc" })
 			.toLocaleString(DateTime.DATE_FULL);
 	});
diff --git a/_includes/layouts/post.njk b/_includes/layouts/post.njk
index bd37f4b..9edff95 100644
--- a/_includes/layouts/post.njk
+++ b/_includes/layouts/post.njk
@@ -13,7 +13,7 @@ layout: base.njk
     <div class="post-metadata">
       <p>
         posted on
-        <time datetime="{{ page.date | htmlDateString }}">{{ page.date | readableDate }}</time>
+        <time datetime="{{ page.date | htmlDateString }}">{{ page.date | readableDate("America/Los_Angeles") }}</time>
         by {{ metadata.author }}
       </p>
       {% set relevantTags = tags | removeBasicTags %}