Proposal for a date system overhaul
FullCalendar was initially designed without much notion of timezones. By default, it ignores timezone offsets in the dates it receives.
The original assumption was that if you received a date from Brussels, say
"2013-09-01T12:00:00+02:00", which is noon, it would display as noon in every timezone.
However, FullCalendar shoehorns this value into a local date. With the same example, if you were in San Francisco, it internally stores the date as
"2013-09-01T12:00:00-08:00". This is bad for two reasons: