Can I map Laravel\'s timestamps from:
created_at to post_date and post_date_gmt?
updated_at to post
If you look into the source of the Eloquent class
https://github.com/illuminate/database/blob/4.2/Eloquent/Model.php#L223-L235
You should be able to change these column names pretty easily by overriding those constants.
As for the _gmt version of those timestamps, you might want to look into events. Here is a good start
http://driesvints.com/blog/using-laravel-4-model-events