diff --git a/blog.py b/blog.py
index 0666e8677..d9cf7e704 100644
--- a/blog.py
+++ b/blog.py
@@ -431,12 +431,18 @@ def htmlBlogPost(session, authorized: bool,
     instanceTitle = \
         getConfigParam(baseDir, 'instanceTitle')
     published = postJsonObject['object']['published']
+    modified = published
+    if postJsonObject['object'].get('updated'):
+        modified = postJsonObject['object']['updated']
     title = postJsonObject['object']['summary']
+    url = ''
+    if postJsonObject['object'].get('url'):
+        url = postJsonObject['object']['url']
     snippet = _getSnippetFromBlogContent(postJsonObject, systemLanguage)
     blogStr = htmlHeaderWithBlogMarkup(cssFilename, instanceTitle,
                                        httpPrefix, domainFull, nickname,
-                                       systemLanguage, published,
-                                       title, snippet)
+                                       systemLanguage, published, modified,
+                                       title, snippet, translate, url)
     _htmlBlogRemoveCwButton(blogStr, translate)
 
     blogStr += _htmlBlogPostContent(debug, session, authorized, baseDir,
diff --git a/webapp_utils.py b/webapp_utils.py
index 55a97c973..b03cb8a05 100644
--- a/webapp_utils.py
+++ b/webapp_utils.py
@@ -795,8 +795,10 @@ def htmlHeaderWithWebsiteMarkup(cssFilename: str, instanceTitle: str,
 
 def htmlHeaderWithBlogMarkup(cssFilename: str, instanceTitle: str,
                              httpPrefix: str, domain: str, nickname: str,
-                             systemLanguage: str, published: str,
-                             title: str, snippet: str) -> str:
+                             systemLanguage: str,
+                             published: str, modified: str,
+                             title: str, snippet: str,
+                             translate: {}, url: str) -> str:
     """html header which includes blog post markup
     https://schema.org/BlogPosting
     """
@@ -814,7 +816,7 @@ def htmlHeaderWithBlogMarkup(cssFilename: str, instanceTitle: str,
         '      "@type" : "BlogPosting",\n' + \
         '      "headline": "' + title + '",\n' + \
         '      "datePublished": "' + published + '",\n' + \
-        '      "dateModified": "' + published + '",\n' + \
+        '      "dateModified": "' + modified + '",\n' + \
         '      "author": {\n' + \
         '        "@type": "Person",\n' + \
         '        "name": "' + nickname + '",\n' + \
@@ -829,9 +831,23 @@ def htmlHeaderWithBlogMarkup(cssFilename: str, instanceTitle: str,
         '      "description": "' + snippet + '"\n' + \
         '    }\n' + \
         '    </script>\n'
+
+    ogMetadata = \
+        '    <meta property="og:locale" content="' + \
+        systemLanguage + '" />\n' + \
+        '    <meta property="og:type" content="article" />\n' + \
+        '    <meta property="og:title" content="' + title + '" />\n' + \
+        '    <meta property="og:url" content="' + url + '" />\n' + \
+        '    <meta content="Epicyon hosted on ' + domain + \
+        '" property="og:site_name" />\n' + \
+        '    <meta property="article:published_time" content="' + \
+        published + '" />\n' + \
+        '    <meta property="article:modified_time" content="' + \
+        modified + '" />'
+
     htmlStr = \
-        htmlHeaderWithExternalStyle(cssFilename, instanceTitle, blogMarkup,
-                                    systemLanguage)
+        htmlHeaderWithExternalStyle(cssFilename, instanceTitle,
+                                    ogMetadata + blogMarkup, systemLanguage)
     return htmlStr