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CCO 1172 (III, pp. 145-146) proposes Nasir al-Din al-Tusi (d. 672/1273) as the possible author. As the study note at the end is dated Ragab 625, al-Tusi cannot be the author. The manuscript can be as old as that.
Golius manuscript.
Together with: f. 1a. Gadwal-i Saʿat Nisf al-Nahari-yi ʿArd-i LTH -- f. 19b. A note in Arabic on arithmetics, beginning: Wa-billah al-Tawfiq. Idha aradna an-nagmaʿ al-Aʿdad al-Mutawaliya min Wahid... -- f. 19b. A note in Persian on time calculation, with the title Istikhrag-i Taliʿ az irtifaʿ-yi Waqt. With a drawing as illustration.
Persian with some Arabic ; Nakhs script.