Hey nafsal , Greetings!!
The date for CAT MBA entrance exam 2019 is not yet announced . It is expected to be announced in the month of july 2019 (last saturday of july 2019) by IIM.
Some important date for CAT(expected)
1. commencement of application for CAT -August 2019
2. last date to apply - september 2019
3. CAT exam - november 2019
ALL THE BEST!!
The tentative date for CAT 2019 is 24 November 2019.
Best of luck!!