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He discussed his idea of history in The Chronology of the Ancient Nations, also known as The Remaining Signs of Past Centuries. It is a comparative study of calendars of different cultures and civilizations, interlaced with mathematical, astronomical, and historical information, exploring the customs and religions of different peoples. Completed in AD 1000 (AH 390/1), it is the first major work of Al-Biruni's, compiled in Gorgan, at the court of Qabus, when he was in his late twenties.

In The Chronology Of Ancient Nations, he mentions the birth and death of the Caliphs, Shia Imams, Fatimah (daughter of Muhammad) and Khadija (Muhammad's wife).