Hey,
this is an international forum, so better to write in english. And no, nobody can give you exact dates and times, because the trainings are behind closed doors except two times a year, so Barca doesn't publish the times.
If you have time and patience and want to see players arriving by cars, you can always go early in the morning to the training facility and wait until the players might arrive.
In the pre-season they trained pretty early, but that most likely changed now with the season's start.