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Update at once all of the Settings -> General -> Time Zone options of your WordPress network.
This plugin was written specifically for a network that has been around for many years and was set up before WordPress 2.8 fixed the daylight savings time issue. Back then, setting the local time for your blog depended on UTC offsets only, so daylight savings folks were off by an hour for half a year. Then WordPress introduced time zones by city and the problem was solved. But we had all our blogs still with the UTC offset in use. So rather than update them individually, this plugin was written to run once and then move on. Recommended use: upload to your mu-plugins folder, run it once and then delete.

Update Time Zones Across Network

Automatically change the time zone for all of the blogs on your multisite network. Not for single installations. WPMU / Multisite / Network only.

This plugin will only work if you have installed and configured Multi-DB plugin from WPMUDEV, if you haven’t please visit https://premium.wpmudev.org/project/multi-db/ to download the plugin.
About Multi-DB Multi-DB spreads Multisite content across tens or thousands of database tables.
Lighten Your System Load
The standard WordPress Multisite installation requires only one database – which is great for hobbyists or people just looking to host a few dozen or few hundred sites.
However, when you get to a few hundred sites, especially if they are particularly active sites, things can start to get a little cramped in there as your database now contains thousands of tables and quite likely a fair bit of data too.
Simple, Well-Documented and Great Support
Use Multi-DB on a new site or an existing site – and you don’t need to be a technical genius to work it out. It’s exceptionally well documented and supported in our forums.
It allows you to split your single database into 16, 256 or 4096 databases. And if you are using cPanel, it even incorporates a script that will do that for you.
After that, it’ll distribute your blogs around the databases evenly – giving you peace of mind, much better performance and the confidence to grow your site as much as you desire.
Support Millions of Blogs
It’s the same solution we use on Edublogs.org and is very similar to that used on WordPress.com.
Increase network performance by spreading your data across multiple databases using Multi-DB. For more information please visit https://premium.wpmudev.org/project/multi-db/

Find a Site

Hey guys,
The plugin has been updated and is compatible with the latest version of WP.



Plugin update

This plugin required Multi-DB Version-3.2.4+ to work. It shows the location of every sites in site.php page.

Update Time Zones Across Network vs Find a Site