<li>
	<span><time datetime="{{.Date}}">{{ .Date.Format "Jan 02, 2006" }}</time></span>
	<a href="{{ .Permalink }}">{{ .Title }}</a>
</li>

<li>
	<span><time datetime="{{.Date}}">{{ .Date.Format .Site.Params.DateFmt }}</time></span>
	<a href="{{ .Permalink }}">{{ .Title }}</a>
</li>

Use format in site's config file
Use format in site's config file
