When is the latest you can take DAT to be in the first batch application?

I am just hoping to study DAT more intense once the school finals/papers are over, which would be mid-May. So, I was planning on taking DAT late-May, but if I have more time to study for it and take it in early or mid-June, I would definitely prefer that.

Does anyone know when would be the latest a person can take DAT and still be in for the first batch application?

Any inputs are appreciated!