hugo-theme-readable/layouts/partials/metadata.html

{{ $dateTime := .PublishDate.Format "2006-01-02" }}
{{ $lastmodTime := .Lastmod.Format "2006-01-02" }}
{{ $dateFormat := .Site.Params.dateFormat | default "Jan 2, 2006" }}
<section class="metadata">
<i data-feather="calendar"></i>
{{ if .PublishDate }}
  {{ if and (ne $lastmodTime $dateTime) (gt .Lastmod .Date) }}
 	 <time datetime="{{ $lastmodTime }}">{{ .Lastmod.Format $dateFormat }}</time>
  	 (first posted <time datetime="{{ $dateTime }}">{{ .PublishDate.Format $dateFormat }}</time>)
  	{{ else }}
		Date Published:	<time datetime="{{ $dateTime }}">{{ .PublishDate.Format $dateFormat }}</time>
  	{{ end }}
{{ end }}
	{{ with .Params.tags }}
		<br>
		Tags: <i data-feather="tag"></i>
		{{ range . }}
		{{ $href := print "/tags/" (urlize .) }}
		<a class="btn btn-sm btn-outline-dark tag-btn" href="{{ $href }}">{{ . }}</a>
	{{ end }}
	</section>
{{ else }} 
	</section>
{{ end }}