Thread: Chronology of Tolkiens Universe
Can you be a little more specific with what you are looking for. If you are just looking for a simple layout of events and the rough time periods in which they occured there is a diagramatic plan in David Day's Tolkien Bestiary. Possibly of more accuracy is a combination of the appendices contained in RotK and those of Robert Foster's Complete Guide to Middle Earth. Appendix A of Foster's Guide covers time from the creation of Ea to the end of the First Age, while RotK Appendix B goes from the beginning of the Second Age to the beginning of the Fourth Age. To go beyond this, you need to start rooting amongst the HOME series.
hope this is of some help. A lot depends how deep you want to go.