Just a quick note. user settings now includes a link to Timezone Settings which lets you pick a real timezone with support for (likely) your local daylight-savings time or "summer time" schedule.
Most datetimes are currently still displayed using old code that doesn't handle timezones properly. So I've updated the default datetime format so that places that support the real timezones will show you a timezone string (like "EDT"), mostly just on home nodes and the second line of the "Tick Tock" nodelet.
Datetimes that don't report this are likely either showing you a time in the server's local timezone (America/New_York) or (such as the dates at the tops of nodes) are trying to show you the time in your timezone based on the incorrect assumption that the server is running in GMT.
There is also a new field in user settings that lets you set the format you want to see datetimes shown in. Put any strftime()-compatible string, such as "%Y-%m-%d %H:%M:%S %Z", and the (currently few) places that handle the new timezones will use it. (See also strftime reference for Win32.)
So expect clean-up to continue (though, not be me for a while, I'm on vacation).
(but my friends call me "Tye")