This plugin provides a shortcode that allows you to format a timestamp.
See date for possible values.
This defaults to the date and time format defined on the general settings page in wp-admin.
This is a Unix timestamp or any string that can be parsed by strtotime.
This defaults to the current time.
Now
[date-format]
Tomorrow
[date-format timestamp="+1 day"]
Values returned from other shortcodes
[date-format format="F j, Y"][post-content id="123" autop="false" shortcode="false" field="post_date"][/date-format]