Generally it takes about 10 weeks for final acceptance from the submission date. Details are at: http://journalinsights.elsevier.com/journals/0038-0717/review_speed
Taher, this might not answer your question, but the topic is important:
Teixeira da Silva, J.A., Dobránszki, J. (2017) Excessively long editorial decisions and excessively long publication times by journals: causes, risks, consequences, and proposed solutions. Publishing Research Quarterly