Hi,

    In short, I would like to know if there is any way to convert a numeric
into a date, similar to how strptime() can convert a string to a date time
class?

    There are some functions, etc. which don't work well with dates, and
tend to force them into numerics.  I understand that the number it spits
back is the number of seconds since the beginning of 1970 (see the first few
sentences of the "Details" portion of ?DateTimeClasses).
    However, it's a bit of a hassle to convert that by hand.  I can create a
function to do this, and it isn't so hard, but I found it hard to believe
such a function didn't already exist, so I wanted to ask the community.

    As an example, today (Oct 5th 2011 at approximately 4:30pm, Pacific
time) is approximately 1317857320 as a numeric, but I would like to know how
to go from that number back to the "2011-10-05 16:28:39 PDT" date time class
which originally generated it.

                        Thanks!
                              Mike

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