Ravi Kiran Katha

WordPress has a site-level timezone setting configured from the admin back-end. All dates and times displayed on the front-end are typically displayed in this timezone.
This plugin enables the display of dates/times in the front-end using the browser’s timezone. This is done by overriding the WordPress’s ‘timezone_string’ and ‘gmt_offset’ options to match the user’s timezone for the duration of a particular request 
ONLY on the front-end interface.
<h4>Browser Timezone Detection</h4>
The browser’s timezone is detected using one of the following two methods
<ol>
<li><a href="http://pellepim.bitbucket.org/jstz/" rel="nofollow ugc">jsTimezoneDetect</a> (default)</li>
<li><a href="http://caniuse.com/geolocation" rel="nofollow ugc">HTML5 Geolocation API</a> and <a href="https://developers.google.com/maps/documentation/timezone" rel="nofollow ugc">Google Timezone API</a></li>
</ol>
jsTimezoneDetect (default) 
 This is the default timezone detection mechanism. Please refer to the script <a href="http://pellepim.bitbucket.org/jstz/" rel="nofollow ugc">home page</a> 
for the compatibility and other notes
HTML5 Geolocation API 
 Detects the current geo-location using <a href="http://caniuse.com/geolocation" rel="nofollow ugc">navigator.geolocation.getCurrentPosition</a>. The location thus detected will be sent to the <a href="https://developers.google.com/maps/documentation/timezone" rel="nofollow ugc">Google Timezone API</a> 
which returns the timezone id – similar to “Asia/Kolkata”.
This method requires you to
<ul>
<li>Enable the “Google Timezone API” option on the plugin options page</li>
<li>Specify a valid <a href="https://developers.google.com/maps/documentation/timezone/get-api-key" rel="nofollow ugc">Google API Key</a>
<ul>
<li>The key should be a browser key</li>
<li>The “Accepted HTTP Referrers” should include the domain name used by the hosting wordpress site or left blank to allow all referrers</li>
</ul>
</li>
</ul>
If the required options for the usage of Google Timezone API are not met, the detection mechanism falls back to the default one.
<h4>Post Timezone Detection</h4>
<ul>
<li>If the browser’s timezone id is not detected successfully, everything else behaves as if this plugin is not installed.</li>
<li>If the browser’s timezone id is detected, the following actions take place
<ul>
<li>A cookie will be set in the browser, based on the cookie options specified on the plugin options page</li>
<li>If a cookie already exists previously with the same id, no action is taken</li>
<li>If a cookie doesn’t already exist previously or exists with a different timezone id, then a window.reload is triggered to refresh the page so that the dates/times on the page are updated</li>
</ul>
</li>
</ul>
<h4>EventON Hook</h4>
This plugin provides a feature to hook into the EventON plugin. When enabled, all EventON dates/times are updated to reflect the browser’s timezone.
<h4>Shortcodes</h4>
This plugin defines the below shortcodes
<ol>
<li>[wp_user_timezone_id] => Returns the timezone id of the browser or null if not available.</li>
<li>[wp_user_timezone_offset] => Returns the timezone’s gmt offset in hours of the browser or null if not available.</li>
</ol>
<h4>Options</h4>
This plugin defines the below options to retrieve the original timezone_string and gmt_offset defined at the site level
<ol>
<li>get_option( ‘site_timezone_string’ ) => Returns the original timezone_string option for the site</li>
<li>get_option( ‘site_gmt_offset’ ) => Returns the original gmt_offset option for the site</li>
</ol>
<h4>Actions/Hooks</h4>
This plugin defines the below filters/hooks
<ol>
<li>apply_filters( ‘wp_user_timezone_id’, $tz_id ) => Allows you to override the timezone string determined by the plugin. This filter can be used to apply user’s timezone preference. If any plugin or wordpress core implements a feature to accept and store user’s preferred timezone, the ‘wp_user_timezone_id’ can be used to apply that timezone value to the front-end. Reference: <a href="https://core.trac.wordpress.org/ticket/18146" rel="nofollow ugc">Add user-level timezone setting</a>).</li>
</ol>
<h4>Admin Backend Dates/Times</h4>
Important: The admin back-end is not modified by this plugin. All dates/times displayed in the back-end are still in the original timezone specified by the WordPress General Settings.

WP User Timezone

Magnificent

WP User Timezone displays the front-end dates & times in the browser's local timezone without actually modifying your database.

Sitebirds

The lightest, fastest, and most beautiful local-time plugin for WordPress.
Just drop one shortcode and every visitor instantly sees times in their own timezone (including automatic daylight saving handling):
<pre><code>[gtg_time date="2025-12-25 15:00:00"] → December 25, 2025 at 3:00 PM (their local time) 
[gtg_time date="2025-08-20 14:00:00" format="g:i A (T)"] → 4:00 PM (CEST)
</code></pre>
Perfect for: 
– Flash sales & limited offers 
– Webinars & live streams 
– Course launches 
– Event sites 
– Global WooCommerce stores
Free features (everything you need to get started): 
– <code>[gtg_time]</code> and <code>[local_time]</code> shortcodes 
– Full Gutenberg block (“Local Time”) 
– Gorgeous purple badge with hover effect 
– Automatic timezone detection via browser (Intl API + cookie) 
– Works perfectly with WP Rocket, LiteSpeed, Cloudflare, SiteGround, Kinsta — all caches & CDNs 
– Modern admin dashboard with stats 
– Zero configuration needed — works out of the box 
– No JavaScript loaded on pages without the shortcode (~4 KB total)
Pro version – Lifetime license $39 (one-time) 
– Auto-convert times inside The Events Calendar, WooCommerce, LearnDash 
– Timezone dropdown widget for manual selection 
– Custom badge colors and styles 
– Analytics dashboard with conversion tracking 
– Priority email support 
– Lifetime updates
<a href="https://pluginjoy.com/product/global-time-ghost-pro/" rel="nofollow ugc">View Pro Features & Pricing →</a>

Global Time Ghost – Local Time Converter

Show any UTC time in the visitor's real local timezone — automatically. Gutenberg block + shortcode. Zero config. Works with every cache & CDN.

WP User Timezone vs Global Time Ghost – Local Time Converter