Tindómiel's dates are not recorded, but we know that she must have been born after II 61 (the date of birth of her elder brother Vardamir). In cases where we do have dates, the Númenóreans typically left a period of ten years or more between children, so Tindómiel was most likely born in or after II 71. Assuming her lifespan was equivalent to that of her brother, she would have lived until about II 481.