Giorgos Sarigiannidis

Time Lord is a plugin which allows you to schedule the publication of part of your content on a set date. It can also calculate age based on a set year in the past or the estimated time if the year is set in the future.
You can use it in posts, pages or any other content type via the <code>[timelord]</code> shordcode. Here are some common examples, supposing that present day is on April 2015:
<ul>
<li><code>[timelord from="2016-01"]SOME CONTENT[/timelord]</code> would output “SOME CONTENT” only when January 2016 comes. </li>
<li><code>[timelord to="2016-01"]SOME CONTENT[/timelord]</code> would output “SOME CONTENT” until January 2016 and then it would remove it. </li>
<li><code>[timelord from="2015-04-01" to="2016-04-01" every="1 day"]SOME CONTENT[/timelord]</code> would output “SOME CONTENT” every other day until April 2016. </li>
<li><code>[timelord from="2015-04-01" to="2016-04-01" every="Monday"]SOME CONTENT[/timelord]</code> would output “SOME CONTENT” every Monday until April 2016. </li>
<li><code>[timelord to="2014-01" del="yes"]SOME CONTENT[/timelord]</code> would output <code><del>SOME CONTENT</del></code> (check screenshot for an example of what the user would actually see in the frontend). </li>
<li><code>[timelord from="2015-01" to="2016-01"]SOME CONTENT[/timelord]</code> would output “SOME CONTENT” from January 2015 to January 2016.</li>
<li><code>[timelord mode="hide" from="2015-01" to="2016-01"]SOME CONTENT[/timelord]</code> would output “SOME CONTENT” every other time except from January 2015 to January 2016.</li>
<li><code>[timelord year="1980"]</code> would output “35”.</li>
<li><code>[timelord year="1980" ordinal="yes"]</code> would output “35th”.</li>
</ul>
<a href="http://demos.gsarigiannidis.gr/time-lord/" title="Time Lord Demo" rel="nofollow ugc">View the demo</a>
<h4>Features</h4>
<ul>
<li>Allows you to show or hide content at a given timeframe.</li>
<li>Supports recurring display of the output at given intervals (e.g. every hour, every day, every month etc.).</li>
<li>Allows you to wrap your content in the <code><del></del></code> tag instead of removing it when expires. </li>
<li>It can display an alternate message when the actual content is not supposed to be shown. </li>
<li>It can output the time remaining until the content will be up or down. </li>
<li>It can calculate age and even output it with an ordinal suffix. </li>
<li>You can use it anywhere a shortcode would go. On posts, pages, custom posts. </li>
<li>You can add as many shortcodes as you like in a single post.</li>
</ul>

Time Lord

Make modifications on your content based on time parameters. Show or hide part of a post at a given point in the future, calculate age and more.

Marcin Pietrzak

Reading Position Indicator adds a stylish horizontal progress bar alongside your content, showing readers how far they’ve scrolled. It enhances user engagement by providing a clear visual cue of reading progress, ideal for blogs, articles, and long-form content.
Features 
* Horizontal progress bar displayed on posts and pages. 
* Customizable colors, opacity, rounded edges, and gradients. 
* Lightweight and performance optimized. 
* Easy setup with no coding required. 
* Translation ready. 
* Compatible with most WordPress themes.
Thank you <a href="http://pankajparashar.com/" rel="nofollow ugc">Pankaj Parashar</a> for your article on CSS-TRICKS about <a href="https://css-tricks.com/reading-position-indicator/" rel="nofollow ugc">Reading Position Indicator</a>

Reading Position Indicator

Add reading position indicator on page top.

Time Lord vs Reading Position Indicator