Kitāb Thāwudhūsīyus fī al-ayyām wa-al-layālī كتاب ثاوذوسيوس في الأيام والليالي Theodosius ثاودوسيوس

IO Islamic 923, ff 23v-51r

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The record is made up of ff. 23v-51r. It was created in 13 Sha‘bān 1198. It was written in Arabic. The original is part of the British Library: Oriental Manuscripts.

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Content

Arabic version of the De diebus et noctibus (Περὶ ἡμερῶν καὶ νυκτῶν; كتاب في الأيام والليالي) a work on astronomy by Theodosius of Bithynia (ثاودوسيوس; Θεοδόσιος; c 160-c 100 BC).

The diagrams are collected on a fold out (f. 51r) following the text. At the end of the text is a collation note in Persian dated 13 Sha‘bān without mention of the year (f. 50r), probably 1198 (2 July 1784).

Contents:

Begins (f. 23v, lines 2-4):

كتاب ثاوذوسيوس في الأيام والليالي وفي بعض النسخ في

الليل والنهار والكتاب مقالتان وثلثة وثلثون شكلًا صدر

الكتاب الشمس يتحرك حركة معتدلة ضد حركة الكل على منطقة البروج

Ends (f. 49v, line 12-f. 50r, line 2):

واجتمعت منها قسي هي أضعاف ح ه وبقيت قوس لرم أن يعد تلك

القوس الدورة ويعد مجموع تلك القسي فيكون قوس ح ه مقدره للدورة

وكانت غير مقدرة هذا خلف فإذن الحكم ثابت وذلك ما أردناه

Extent and format
ff. 23v-51r
Written in
Arabic in Arabic script
Type
Manuscript item

Archive information for this record

Access & Reference

Original held at
British Library: Oriental Manuscripts
Access conditions

Unrestricted

Archive reference
IO Islamic 923, ff 23v-51r

History of this record

Date(s)
13 Sha‘bān 1198 (AH, Hijri qamari)

Related material

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Edition:

  • Theodosius, Kitāb al-Ayyām wa-al-layāli , in Majmūʿ al-rasāʼil ḥarrarahā Naṣīr al-Dīn Muḥammad ibn Muḥammad ibn al-Ḥasan al-Ṭūsī (Ḥaydarābād al-Dakkan: Dāʼirat al-Maʿārif al-ʿUthmānīyah, 1358-1359 [1939-1940])

Edition of original Greek text:

  • Theodosii De habitationibus liber: De diebus et noctibus libri duo , Rudolf Fecht, trans, (Berlin: Weidmannsche Buchhandlung, 1927)

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Kitāb Thāwudhūsīyus fī al-ayyām wa-al-layālī كتاب ثاوذوسيوس في الأيام والليالي Theodosius ثاودوسيوس, British Library: Oriental Manuscripts, IO Islamic 923, ff 23v-51r, in Qatar Digital Library <https://www.qdl.qa/archive/81055/vdc_100023602345.0x000003> [accessed 3 August 2026]

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