Stardates are how I would like to keep time for this blog but Star Trek doesn't have a consistent sense of how to translate real time into stardates. During and after the Next Generation a certain amount of sanity appeared but nothing that can be rolled backwards to figure out what 2013 would have been. The most consistent and repeatable way to represent current time in stardates is by using the stardate calendar for Star Trek Online, which has a direct mapping from the current age into stardates of the future(which actually takes place after the events of ST:Nemesis. Current stardate: 90660.85.
Calculator is here.