Abstract: Purpose of "dateline of the Quran" is to determine date of revelation the Quranic suras. Considering that this issue is historical research. Correct method of research is based on historical evidence, creditable narrations and concepts and notions of verses and suras. Therefore, the Muslim Quran scholars, often have invoked in this field to narrated by Ibn Abbas and accordingly have dealt in arrangement of revelation of suras, however, since the majority of orientalists have put, tone and songs review, style of verses and suras as the basis and foundation of their research and have used citation of weak narrations, also have achieved incorrect results, so that their research results in presentation of arrangement the suras, not only is incompatible with arrangement of validity but also between their own arrangements is observed many differences and inconsistencies. This point indicates that their criteria and principles has not been nothing more than tastes and a pure fantasy. This study pays to explain, criticize and review of comments Regis Blachere in the field of dateline of Quranic suras.