Looking at the raw details it appears that the server's time is not captured in the Environment details automatically sent with exceptions.
It would be great if this was included so exceptions can be easily correlated to our internal logs/system events even if our server times are a bit out.
Mar 04 2013
This would indeed be super handy -- we'll look at getting it added soon. It will of course require an update to the provider you're using once it's supported.
Mar 22 2013
This is now under development and should only be a week or so away.
May 14 2013
Sorry for the delay -- we did get this integrated into some of the popular providers early on but we've now nailed all of them.
Blog post with more detail here: http://raygun.io/blog/2013/05/raygun-error-providers-now-record-local-time/
Thanks for the suggestion - keep them coming!