Cognizant Technology Solutions — delay in date of joining

Address: 2nd Cross St, Madras Export Processing Zone, Tambaram, Chennai, Tamil Nadu

Hi,
I got selected in the month of january'19 and i received the offer letter. But still i did not receive any date of joining intimation. Expecting the call letter fron cognizant. My friends have received the date of joining in the month of july'19 itself. Whether i will receive the call letter this month or next month? Is there any possibilities? Please resolve this query...