I apologize in advance if this question has been asked before or should be categorized in a different section.
Question:I defended dissertation in 2009. The dataset that was used for dissertation was from 2005. Is it too late to publish articles from dissertation?
Obviously, this is dependent on field. For people in lab sciences or most natural science areas this seems an odd question. But it isn't odd in economics and business etc. So I think you'll need to let us know that.
If the topic is trends in internet usage in China say, this data is looking old. You'd have to put a spin on why it is still relevant. For example, if the paper had a more theoretical angle and the data show that the theory holds up empirically then the year might not matter so much.
But I don't know what your field is. If you are in econ or similar social sciences you can PM me.