Antonio D.

Daniil Zhitnitskii

This plugin provides network administrators ability to set same time zone over all blogs in multisite installation in one click, and also it restricts changes of timezone from local blogs settings.
*Based on: https://premium.wpmudev.org/forums/topic/set-default-timezone-for-new-blogs-in-the-network
Only works with multisite installation!
Gutenberg: compatible!
<h3>Disclaimers</h3>
The Simple default timezone plugin is supplied “as is” and all use is at your own risk.

Simple default timezone

As Super Administrator, you can set the (default) timezone for all blogs.

PluginJoy

Tired of timezone confusion killing conversions? Global Time Ghost is the lightweight WordPress timezone converter that makes your site visitor-smart. Convert UTC times to local time seamlessly—ideal for e-commerce, events, and remote teams.
Free Features: 
* <code>[gtg_time]</code> shortcode: Display local times in posts, pages, or widgets (with upgrade badge). 
* WooCommerce integration: Add local-time badges to product prices. 
* Basic settings page: Enable/disable features easily. 
* Browser-based detection: Uses JS and cookies for accurate timezone conversion (falls back to UTC).
Pro Features (upgrade for $39 lifetime): 
* Full auto-adjustments for prices, events, and email reminders. 
* Deep hooks for The Events Calendar, WooCommerce, and more.
No bloat—just PHP smarts for better global UX. Perfect for WooCommerce stores, event sites, and international blogs needing a reliable local time plugin.

Global Time Ghost

Automatically adjust times, prices, and events to visitor's local timezone. WooCommerce-compatible shortcode and badges for global WordPress sites.

Simple default timezone vs Global Time Ghost