As noted by dkmarsh,
here, FTM's servers are located in Arizona, which does not observe Daylight Savings Time.
As such, all members are advised to check My Stuff>Edit Preferences and ensure that their offset did not change from correct to incorrect when DST ended.
This is generally a moot point, but it can be critical if you want to edit a post just before the deadline (and discover that it's already passed, as happened to me).
