The homepage, forum and wiki will be going offline for up to 30 minutes on 2019-10-20, between 09:00 and 09:30 UTC.
In your local time (if you are logged in and have your time offset correctly configured), this is:
October 20, 2019, 09:00:00 AM
We are going to migrate the wiki to a new database system, the same one used by the forum. We are also going to be doing some database tuning to adjust it to the new server we migrated to last month.
At the same time, we will install security updates on the server which hosts the homepage, forum and wiki. These will be non-disruptive to functionality, as the server is running a stable OS release that gets critical fixes only.