Is there somebody who can tell me wich is the date of ramazan.thank you

Yes it will start 13 September.

thank you...it will take 30 days?

Yes so on the 13th of October there will be Seker Bayrami/Ramazan Bayrami

Just to add..that the date of the first of Ramadan can differ from country to country, but it's just one day or sometimes even two days apart.