Add site parameters for long and short date formats

exampleSite/config.yaml

@@ -38,6 +38,10 @@ params:
   # copyrightHolder: Copyright Holder
   # Show the "Powered by Hugo-Tufte and Hugo."
   showPoweredBy: false
+  # The format to use for short dates shown in lists of posts. Defaults to "Jan 02"
+  dateFormatShort: "Jan 02"
+  # The format to use for dates on posts. Defaults to "2006-01-02"
+  dateFormatLong: "2006-01-02"
   # Site wide kill switch for date in pages
   hidedate: false
   # Site wide kill switch for post summary on home page

layouts/_default/list.html

@@ -16,7 +16,12 @@
       {{ range .Pages }}
       <ul>
       <li>
-        <span class="list-date">{{ .Date.Format "Jan 2" }} &middot;</span>
+        <span class="list-date">
+          {{ if .Site.Params.dateFormatShort }}
+            {{ .Date.Format .Site.Params.dateFormatShort }}
+          {{ else }}
+            {{ .Date.Format "Jan 2" }}
+          {{ end }} &middot;</span>
         <a href="{{ .RelPermalink }}">{{.Title}}</a>
       </li>
       </ul>

layouts/partials/content.header.html

@@ -13,7 +13,12 @@
   {{- end -}}
 
   {{- if not .Params.hidedate -}}
-  <p class="date">{{ .Date.Format "2006-01-02" }}</p>
+  <p class="date">
+    {{ if .Site.Params.dateFormatLong }}
+      {{ .Date.Format .Site.Params.dateFormatLong }}
+    {{ else }}
+      {{ .Date.Format "2006-01-02" }}
+    {{ end }}</p>
   {{- end -}}
 
   {{- if not .Params.hidereadtime -}}