diff --git a/src/components/Datetime.astro b/src/components/Datetime.astro
index dfbedf0..8335f4a 100644
--- a/src/components/Datetime.astro
+++ b/src/components/Datetime.astro
@@ -13,7 +13,6 @@ type Props = {
   class?: string;
   size?: "sm" | "lg";
   pubDatetime: string | Date;
-  timezone?: string;
   modDatetime?: string | Date | null;
 };
 
@@ -22,7 +21,6 @@ const {
   modDatetime,
   size = "sm",
   class: className = "",
-  timezone: postTimezone,
 } = Astro.props;
 
 const t = useTranslations(Astro.currentLocale);
@@ -30,7 +28,7 @@ const t = useTranslations(Astro.currentLocale);
 const isModified = modDatetime && modDatetime > pubDatetime;
 
 const datetime = dayjs(isModified ? modDatetime : pubDatetime).tz(
-  postTimezone ?? config.site.timezone
+  config.site.timezone
 );
 
 const date = datetime.format("D MMM, YYYY");
diff --git a/src/content.config.ts b/src/content.config.ts
index 77517be..d5d432b 100644
--- a/src/content.config.ts
+++ b/src/content.config.ts
@@ -20,7 +20,6 @@ const posts = defineCollection({
       description: z.string(),
       canonicalURL: z.string().optional(),
       hideEditPost: z.boolean().optional(),
-      timezone: z.string().optional(),
     }),
 });
 
diff --git a/src/pages/[...slug]/index.astro b/src/pages/[...slug]/index.astro
index 9bfd35d..6e40438 100644
--- a/src/pages/[...slug]/index.astro
+++ b/src/pages/[...slug]/index.astro
@@ -66,7 +66,6 @@ const {
   canonicalURL,
   pubDatetime,
   modDatetime,
-  timezone,
   tags,
   hideEditPost,
 } = post.data;
@@ -119,7 +118,7 @@ const ogImage = ogImageUrl
     </h1>
 
     <div class="my-2 flex items-center gap-2">
-      <Datetime {pubDatetime} {modDatetime} {timezone} size="lg" />
+      <Datetime {pubDatetime} {modDatetime} size="lg" />
       <span
         aria-hidden="true"
         class:list={[