diff --git a/nummi/statement/templates/statement/statement_table.html b/nummi/statement/templates/statement/statement_table.html
index 0139811..57b4b8c 100644
--- a/nummi/statement/templates/statement/statement_table.html
+++ b/nummi/statement/templates/statement/statement_table.html
@@ -41,7 +41,9 @@
                         {% if snap.file %}<a href="{{ snap.file.url }}">{{ "attachment"|remix }}</a>{% endif %}
                     </td>
                     <th class="date" scope="row">
-                        <a href="{{ snap.get_absolute_url }}">{{ snap.date|date:"Y-m-d" }}</a>
+                        <a href="{{ snap.get_absolute_url }}">
+                            <time datetime="{{ snap.date|date:"Y-m-d" }}">{{ snap.date|date:"Y-m-d" }}</time>
+                        </a>
                     </th>
                     {% if not account %}
                         <td class="r">{{ snap.account.icon|remix }}</td>
diff --git a/nummi/transaction/templates/transaction/transaction_table.html b/nummi/transaction/templates/transaction/transaction_table.html
index 86ba914..fb89dbf 100644
--- a/nummi/transaction/templates/transaction/transaction_table.html
+++ b/nummi/transaction/templates/transaction/transaction_table.html
@@ -43,7 +43,9 @@
                     <td class="c">
                         {% for invoice in trans.invoices %}<a href="{{ invoice.file.url }}">{{ "attachment"|remix }}</a>{% endfor %}
                     </td>
-                    <td class="date">{{ trans.date|date:"Y-m-d" }}</td>
+                    <td class="date">
+                        <time datetime="{{ trans.date|date:"Y-m-d" }}">{{ trans.date|date:"Y-m-d" }}</time>
+                    </td>
                     <th scope="row" class="l">
                         <a href="{{ trans.get_absolute_url }}">{{ trans.name }}</a>
                     </th>
diff --git a/nummi/transaction/templatetags/transaction_extras.py b/nummi/transaction/templatetags/transaction_extras.py
index a042cd3..30cba01 100644
--- a/nummi/transaction/templatetags/transaction_extras.py
+++ b/nummi/transaction/templatetags/transaction_extras.py
@@ -18,7 +18,8 @@ def month_url(context, month, cls="", fmt="Y-m"):
 
     url = reverse(url_name, kwargs=url_params)
     return mark_safe(
-        f"""<a class="{cls}" href="{url}">{date(month, fmt).capitalize()}</a>"""
+        f"""<a class="{cls}" href="{url}"><time datetime="{date(month, "Y-m")}">"""
+        f"""{date(month, fmt).capitalize()}</time></a>"""
     )
 
 
@@ -29,4 +30,7 @@ def year_url(context, year, cls=""):
     url_name, url_params = ac_url("transaction_year", {"year": year}, context)
 
     url = reverse(url_name, kwargs=url_params)
-    return mark_safe(f"""<a class="{cls}" href="{url}">{ year }</a>""")
+    return mark_safe(
+        f"""<a class="{cls}" href="{url}">"""
+        f"""<time datetime="{year}">{year}</time></a>"""
+    )