This is a comprehensive timeline with far more detail than you can imagine. Feel free to use it to help you understand the histories behind your characters. It is a great resource for developing character backgrounds and associations.
Notes on the Timeline:
Most of this timeline was borrowed from UBERGEEK ULTRA-TREK NERD Alex Rosenzweig . We have modified the timeline to fit our expanded universe but without Alex’s work I would never have gotten this much done.