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.
About this record
- 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
- It is part of
- 230 imagesRef: IO Islamic 923
- Written in
- Arabic in Arabic script
- Type
- Manuscript item
Archive information for this record
- Original held at
- British Library: Oriental Manuscripts
- Access conditions
Unrestricted
- Archive reference
- IO Islamic 923, ff 23v-51r
- Date(s)
- 13 Sha‘bān 1198 (AH, Hijri qamari)
- Select Bibliography
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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- Subjects
- Astronomy, ArabAstronomy, GreekAstronomy--Early works to 1800
- People & organisations
- TheodosiusNaṣīr al-Dīn Muḥammad ibn Muḥammad Ṭūsī
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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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- Reference
- IO Islamic 923, ff 23v-51r
- Title
- Kitāb Thāwudhūsīyus fī al-ayyām wa-al-layālī كتاب ثاوذوسيوس في الأيام والليالي Theodosius ثاودوسيوس
- Pages
- 23v:52r
- Author
- Please see item description
- Usage terms
- Public Domain

























































