We know the year of Aryabhata's birth since he tells us that he was twenty-three years of age when he wrote Aryabhatiya which he finished in 499.
Alam namin ang mga taon ng Aryabhata ng kapanganakan mula noong siya ay nagsasabi na siya ay dalawangpu't-tatlong taon ng edad kapag siya wrote Aryabhatiya na siya tapos na sa 499.