Timestamp of previous command issued
 

Is there a way to find out the timestamp of when a previously issued command was run?

Not really. You can see a history of commands that were issued and when processes (that are running) were started. If you are looking for a command that started a service, you can always look at the log files for that certain service to see what happened. But if all those options did not suit your needs, then you probably need to setup process accounting. I believe that's your answer.

-twantrd