How many times CAT exam held in a year?

How many times Common Admission Test held in a year???? can you provide me basic details of the exam???

[Quick Sam]

Common Admission Test is conducted by the Indian Institutes of Management (IIMs) as an entrance exam for admission to MBA courses. this exam is being conducted once in a year. here are the details of it:

Eligibility:
The applicant must be graduated with 50% marks or equivalent CGPA or possess an equivalent qualification recognized by the ministry of HRD, Government of India.

Common Admission Test syllabus
CAT English/Verbal Ability: Reading comprehension, verbal reasoning, syllogisms, analogies, antonyms and synonyms, fill in the blanks, sentence correction, idioms, etc.

CAT Maths/Quant Ability: Number systems, geometry, trogonometry, probability, permutation combination, algebra, mensuration, time and work, averages, percentages, profit and loss, quadratic and linear equations, etc.

CAT Data Interpretation: Interpretation and analysis of data based on text, tables, graphs (line, area), charts (column, bar, pie), venn diagram, etc.

CAT Logical Reasoning: Clocks, calendars, binary logic, seating arrangement, blood relations, logical sequence, assumption, premise, conclusion, linear and matrix arrangement, etc.