Fix date timezone offset

app/[slug]/page.tsx

@@ -26,7 +26,7 @@ export default async function Post({ params: { slug } }: { params: { slug: strin
   return (
     <>
       <article className={styles.post}>
-        <span>{post.date.toLocaleDateString()}</span>
+        <span>{post.date.toLocaleDateString('en-US', { timeZone: 'UTC' })}</span>
         <h1>{post.title}</h1>
         <p className={styles.subtitle}>{post.subtitle}</p>
 

app/page.tsx

@@ -28,7 +28,7 @@ export default async function Index() {
           )}
           <div className={styles.postLink}>
             <h2><Link href={`/${post.slug}`}>{post.title}</Link></h2>
-            <span>{post.date.toLocaleDateString()}</span>
+            <span>{post.date.toLocaleDateString('en-US', { timeZone: 'UTC' })}</span>
             <p>{post.subtitle}</p>
           </div>
         </>

utils/post.ts

@@ -45,9 +45,12 @@ export async function loadSinglePage(slug: string): Promise<Post | null> {
 
   if (!data.title) return null;
 
+  const [year, month, day] = postMatch.groups?.date.split('-') || []
+  const date = new Date(Date.UTC(parseInt(year), parseInt(month) - 1, parseInt(day)))
+
   return {
     slug: postMatch.groups?.slug || '',
-    date: new Date(postMatch.groups?.date || ''),
+    date,
     title: data.title,
     subtitle: data.subtitle,
     unlisted: typeof data.unlisted === 'boolean' ? data.unlisted : false,