If you check the lodestone, they list what times they update when character creation is open
Example
http://na.finalfantasyxiv.com/lodestone/...909189e479
http://na.finalfantasyxiv.com/lodestone/
Example
http://na.finalfantasyxiv.com/lodestone/...909189e479
http://na.finalfantasyxiv.com/lodestone/