Hello Lucky,

SAT exam is conducted by the College Board to test the candidate's knowledge of reading, writing and quantitative aptitude along with certain subjects. The exam is conducted for candidates who are interested in studying in universities in USA and some other countries. SAT tests are of two types - SAT Reasoning Test and SAT Subject Test. 

SAT is internationally administered four times a year; while SAT Subject test is conducted five times a year. The SAT exam is administered internationally in the months of October, December, March, May, and June (SAT Subject test). The SAT Test Dates for the US candidates are typically scheduled in the months of May, June, August, October, November, December, and March. One can take SAT as many times as required. 

For more information, follow the below link:

Https://studyabroad.careers360.com/articles/sat