None knew or knows the parents and exact birth-date of Sai Baba; but it can be approximately determined by His stay in Shirdi.
Baba first came to Shirdi, when he was a young lad of sixteen and stayed there for three years.
Then all of a sudden He disappeared for some time.
After some time, He reappeared in the Nizam state near Aurangabad,
and again came to Shirdi with the marriage-party of Chand Patil, when He was twenty years old.
Since then, He stayed in Shirdi continuously for a period of sixty years, after which Baba took His Maha-Samadhi in the year 1918.
From this we can say that the year of Baba’s birth is approximately 1838 A.D.
"I draw to Me, My man from far off or even across the seven Seas to Shirdi, like a sparrow with a string fastened to its feet"-Shirdi Sai Baba, Indian Spiritual Guru-God 