diff --git a/_data/site.js b/_data/site.js
index e214bbe..a8d591a 100644
--- a/_data/site.js
+++ b/_data/site.js
@@ -3,5 +3,7 @@ module.exports = {
   // SITE_URL=https://blog.jan-leila.com pnpm run build
   // SITE_URL=https://volpe.jan-leila.com pnpm run build
   // SITE_URL=http://your-onion-address.onion pnpm run build
-  url: process.env.SITE_URL || "http://localhost:8080"
+  url: process.env.SITE_URL || "http://localhost:8080",
+  // Timezone for displaying dates (uses IANA timezone names)
+  timezone: "America/Chicago"
 };
\ No newline at end of file
diff --git a/_includes/base.njk b/_includes/base.njk
index 5091fda..9d1e331 100644
--- a/_includes/base.njk
+++ b/_includes/base.njk
@@ -136,6 +136,28 @@
   </script>
   {% endif %}
   
+  <script>
+    document.querySelectorAll('.localizable-time').forEach(function(el) {
+      var iso = el.getAttribute('datetime');
+      if (!iso) return;
+      try {
+        var date = new Date(iso);
+        if (isNaN(date.getTime())) return;
+        var options = {
+          year: 'numeric',
+          month: 'long',
+          day: 'numeric',
+          hour: 'numeric',
+          minute: '2-digit',
+          timeZoneName: 'short'
+        };
+        el.textContent = date.toLocaleString(undefined, options);
+      } catch (e) {
+        // Keep server-rendered fallback on error
+      }
+    });
+  </script>
+  
   <footer>
     <div>
       <!-- Social Things -->
diff --git a/_includes/post.njk b/_includes/post.njk
index 18feab3..4e10c20 100644
--- a/_includes/post.njk
+++ b/_includes/post.njk
@@ -10,9 +10,9 @@ layout: base.njk
   {% endif %}
   <header class="post-header">
     <h1>{{ title }}</h1>
-    <time datetime="{{ createdAt | dateTimeFormat }}">{{ createdAt | dateTimeFormat }}</time>
+    <time class="localizable-time" datetime="{{ createdAt | isoDateTime }}">{{ createdAt | dateTimeFormat }}</time>
     {% if updatedAt and (updatedAt | isMoreThanHourAfter(createdAt)) %}
-    <p class="updated-at">Updated: <time datetime="{{ updatedAt | dateTimeFormat }}">{{ updatedAt | dateTimeFormat }}</time></p>
+    <p class="updated-at">Updated: <time class="localizable-time" datetime="{{ updatedAt | isoDateTime }}">{{ updatedAt | dateTimeFormat }}</time></p>
     {% endif %}
   </header>
   
diff --git a/eleventy.config.js b/eleventy.config.js
index 20539fc..969de5b 100644
--- a/eleventy.config.js
+++ b/eleventy.config.js
@@ -8,6 +8,7 @@ const fs = require("fs");
 const crypto = require("crypto");
 const path = require("path");
 const { DateTime } = require("luxon");
+const siteConfig = require("./_data/site.js");
 
 const fileHashCache = {};
 const getFileHash = (file, dir = "css") => {
@@ -193,15 +194,24 @@ module.exports = (eleventyConfig) => {
 
   eleventyConfig.addFilter("dateTimeFormat", (date) => {
     const dt = date instanceof Date 
-      ? DateTime.fromJSDate(date)
-      : DateTime.fromISO(date);
-    return dt.toFormat('MMMM d, yyyy h:mm a');
+      ? DateTime.fromJSDate(date, { zone: 'utc' })
+      : DateTime.fromISO(date, { zone: 'utc' });
+    // Convert to site timezone for display
+    const displayDt = dt.setZone(siteConfig.timezone);
+    return displayDt.toFormat('MMMM d, yyyy h:mm a ZZZZ');
+  });
+
+  eleventyConfig.addFilter("isoDateTime", (date) => {
+    const dt = date instanceof Date 
+      ? DateTime.fromJSDate(date, { zone: 'utc' })
+      : DateTime.fromISO(date, { zone: 'utc' });
+    return dt.toISO();
   });
 
   eleventyConfig.addFilter("isoDate", (date) => {
     const dt = date instanceof Date 
-      ? DateTime.fromJSDate(date)
-      : DateTime.fromISO(date);
+      ? DateTime.fromJSDate(date, { zone: 'utc' })
+      : DateTime.fromISO(date, { zone: 'utc' });
     return dt.toISODate();
   });
 
@@ -209,8 +219,8 @@ module.exports = (eleventyConfig) => {
     if (!date1 || !date2) return false;
     const toDateTime = (d) => {
       if (DateTime.isDateTime(d)) return d;
-      if (d instanceof Date) return DateTime.fromJSDate(d);
-      return DateTime.fromISO(d);
+      if (d instanceof Date) return DateTime.fromJSDate(d, { zone: 'utc' });
+      return DateTime.fromISO(d, { zone: 'utc' });
     };
     const dt1 = toDateTime(date1);
     const dt2 = toDateTime(date2);
diff --git a/posts/posts.11tydata.js b/posts/posts.11tydata.js
index e04af33..dc92109 100644
--- a/posts/posts.11tydata.js
+++ b/posts/posts.11tydata.js
@@ -10,7 +10,7 @@ const getGitCreatedTime = (filePath) => {
       { encoding: "utf-8", stdio: ["pipe", "pipe", "pipe"] }
     ).trim();
     if (result) {
-      return DateTime.fromISO(result);
+      return DateTime.fromISO(result).toUTC();
     }
   } catch (e) {
     // Git command failed, return null
@@ -25,7 +25,7 @@ const getGitModifiedTime = (filePath) => {
       { encoding: "utf-8", stdio: ["pipe", "pipe", "pipe"] }
     ).trim();
     if (result) {
-      return DateTime.fromISO(result);
+      return DateTime.fromISO(result).toUTC();
     }
   } catch (e) {
     // Git command failed, return null
@@ -61,7 +61,7 @@ const getFileCreatedTime = (filePath) => {
   try {
     const stats = fs.statSync(filePath);
     const time = stats.birthtime ?? stats.mtime;
-    return DateTime.fromJSDate(time);
+    return DateTime.fromJSDate(time, { zone: 'utc' });
   } catch (e) {
     return null;
   }
@@ -70,7 +70,7 @@ const getFileCreatedTime = (filePath) => {
 const getFileModifiedTime = (filePath) => {
   try {
     const stats = fs.statSync(filePath);
-    return DateTime.fromJSDate(stats.mtime);
+    return DateTime.fromJSDate(stats.mtime, { zone: 'utc' });
   } catch (e) {
     return null;
   }
@@ -79,8 +79,8 @@ const getFileModifiedTime = (filePath) => {
 const parseDate = (value) => {
   if (!value) return null;
   if (DateTime.isDateTime(value)) return value;
-  if (value instanceof Date) return DateTime.fromJSDate(value);
-  const parsed = DateTime.fromISO(value);
+  if (value instanceof Date) return DateTime.fromJSDate(value, { zone: 'utc' });
+  const parsed = DateTime.fromISO(value, { zone: 'utc' });
   return parsed.isValid ? parsed : null;
 }
 
@@ -98,7 +98,7 @@ const getPostCreatedAt = (data) => {
     return fileDate;
   }
 
-  return DateTime.fromJSDate(data.page.date);
+  return DateTime.fromJSDate(data.page.date, { zone: 'utc' });
 }
 
 module.exports = {