Erlang DateTime values are a set of tuples of the form:
{Date, Time}
Where Date and Time are defined as follows:
{Year, Month, Day} % Date
{Hour, Minute, Second} % Time
These tuples are used in all Erlang time or date-related functions,
with the exception of the various calendar module functions that
manipulate time in Epoch seconds.
-- BrentAFulgham - 28 Aug 2004
