The homepage, forum, wiki and IRC will be going offline for about five minutes on 2018-11-03, between 10:00 and 10:15 UTC.
For convenience, this means:
Your local time (if you are logged in and have your time offset correctly configured):
November 03, 2018, 10:00:00 AM
EDT (USA east coast):
2018-11-03, 06:00-06:15
UTC (UK):
2018-11-03, 10:00-10:15
CET (Most of Europe):
2018-11-03, 11:00-11:15
AEDT (Australia east coast):
2018-11-03, 21:00-21:15
The intent is to install security updates on the server which hosts the homepage, forum, wiki and IRC. These will be non-disruptive to functionality, as the server is running a stable OS release that gets critical fixes only.