Parsing date like 1240915075
This is UNIX time (sometimes called Epoch time). It measures the number of seconds elapsed since January 1, 1970 (The Unix epoch is the time 00:00:00 UTC on 1 January 1970)
Here's an example converter: http://www.esqsoft.com/javascript_examples/date-to-epoch.htm
A stackoverflow question regarding converting integer time using Ruby: Ruby / Rails: convert int to time OR get time from integer?
use the Time.at function to convert e.g.:
t = Time.at(i)