I wouldn't normally give this reminder but with everything going on, I thought it was a good idea this time.
The forum will be down for maintenance tonight starting in about 20 minutes (6 pm) and will end at 10 pm. After 6 pm do not make any posts even if you don't see the maintenance message. I will check if anyone is on but the system doesn't show me until they've been logged in for a full minute. So you could be making a post or sending a message and when the server goes down you'll lose it.
Remember that every Sunday, there will be a 4-hour maintenance window starting at 6 pm. Normally, there will not be a reminder.