Hello Ashish,
SAT 2018 is internationally administered four times a year; while SAT Subject test 2018 is conducted five times a year. The SAT exam 2018 is administered internationally in the months of October, December, March, May, and June (SAT Subject test).
Aspirants can register for the SAT exam by two methods, through online and by mail.
Go through the link below to check the detailed information about the exam-

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

Good Luck!

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