Timestamp GMT DST

Hey there,

I urgently need help.

Does someone have a Timestamp code that is GMT and DOES compensate for Daylight Savings Time?

I was using this one ( http://coronalabs.com/blog/2013/01/15/working-with-time-and-dates-in-corona/)  before but I need a unix like timestamp so I think that DST needs to be considered, right? I need it for proper OAuth authentification.

Any help highly appreciated.

Roman