diff --git a/themes/typing/layout/_partial/post/date.ejs b/themes/typing/layout/_partial/post/date.ejs
index 9e0a38e..825dfc8 100644
--- a/themes/typing/layout/_partial/post/date.ejs
+++ b/themes/typing/layout/_partial/post/date.ejs
@@ -1,4 +1,4 @@
 <a href="<%- url_for(post.path) %>" class="<%= class_name %>">
   <%/* Date format is specified to skip timezone conversion */%>
-  <time datetime="<%= date(post.date, 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]') %>" itemprop="datePublished"><%= date(post.date, date_format) %></time>
+  <time datetime="<%= date(post.date, 'YYYY-MM-DD[T00:00:00.000Z]') %>" itemprop="datePublished"><%= date(post.date, date_format) %></time>
 </a>
diff --git a/themes/typing/layout/_partial/post/updated-date.ejs b/themes/typing/layout/_partial/post/updated-date.ejs
index 20a1f4f..11caaad 100644
--- a/themes/typing/layout/_partial/post/updated-date.ejs
+++ b/themes/typing/layout/_partial/post/updated-date.ejs
@@ -1,5 +1,5 @@
 <%/* User-specified updated date */%>
 <%/* default post.updated is (almost) always is the time 'hexo generate' is executed */%>
 <a href="<%- url_for(post.path) %>" class="<%= class_name %>">
-  <time datetime="<%= date(post.lastUpdated, 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]') %>" itemprop="dateUpdated"><%= date(post.lastUpdated, date_format) %></time>
+  <time datetime="<%= date(post.lastUpdated, 'YYYY-MM-DD[T00:00:00.000Z]') %>" itemprop="dateUpdated"><%= date(post.lastUpdated, date_format) %></time>
 </a>
diff --git a/themes/typing/scripts/openGraph.js b/themes/typing/scripts/openGraph.js
index 30b789a..abf86d6 100644
--- a/themes/typing/scripts/openGraph.js
+++ b/themes/typing/scripts/openGraph.js
@@ -121,14 +121,14 @@ function openGraphHelper (options = {}) {
   if (published) {
     if ((moment.isMoment(published) || moment.isDate(published)) && !isNaN(published.valueOf())) {
       // Skip timezone conversion
-      result += og('article:published_time', moment(published).format('YYYY-MM-DD[T]HH:mm:ss.SSS[Z]'))
+      result += og('article:published_time', moment(published).format('YYYY-MM-DD[T00:00:00.000Z]'))
     }
   }
 
   if (updated) {
     if ((moment.isMoment(updated) || moment.isDate(updated)) && !isNaN(updated.valueOf())) {
-      result += og('article:modified_time', moment(updated).format('YYYY-MM-DD[T]HH:mm:ss.SSS[Z]'))
-      result += og('og:updated_time', moment(updated).format('YYYY-MM-DD[T]HH:mm:ss.SSS[Z]'))
+      result += og('article:modified_time', moment(updated).format('YYYY-MM-DD[T00:00:00.000Z]'))
+      result += og('og:updated_time', moment(updated).format('YYYY-MM-DD[T00:00:00.000Z]'))
     }
   }