In my algorithm, I import data using fetch_csv and access it with data.current(). For a particular stock, data from my CSV is only available for particular dates, ex. 4/5/2012 a 4/8/2012. When I use data.current(), the data associated with the most recent date in the past is returned if there is no data for the date on which date.current() is called (correct?). How can I find which date data returned by data.current() is from? Thank you.