When will class 12 CBSE results of 2009 be declared in Kolkata?

I cannot answer this question accurately as my knowledge cutoff is July 2022 and the information you are seeking is for May 2009. There could have been significant changes or updates to the declaration date since then.

For the most up-to-date and accurate information, I recommend that you check the official website of the Central Board of Secondary Education (CBSE) or contact your school or the CBSE regional office in Kolkata.