Hi Dibyoswarup,
If you want to submit application then it is from 16/06/19 to 19/06/19 upto 3 pm.I am giving you link there is a pdf from where you can get all details of your query.
https://www.google.com/url?sa=t&source=web&rct=j&url=http://www.cee-kerala.org/docs/keam2019/result/neet%2520mark%2520submission%2520eng.pdf&ved=2ahUKEwjes7KClPXiAhUEXisKHVzFCYYQFjAKegQIBBAI&usg=AOvVaw3Ybwdpyhf3lGTerQlzzb9o
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