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Calendrical diagram

Anonymous · betmas

BothSourceEnglish
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machine-draft · no human review 22 passages · 173 words

Work dossier · summary and historical context

Summary

This work is a calendrical diagram from the Ethiopic (Geʿez) tradition, designed to compute movable feasts. It survives in a single manuscript witness (betmas) with no colophon or scribal note, leaving its transmission chain unknown. The diagram is undated, but paleographic comparison suggests a 17th–18th century origin, though this remains tentative. The edition provides a transcription and English translation but lacks commentary on the diagram’s computational rules, requiring external computus manuals for full interpretation. The diagram’s structure aligns with known Ethiopic computus manuscripts, and its headings include transliterated Coptic terms for the lunar cycle, likely referencing the 19-year Metonic cycle used in Alexandrian-derived computus.

This diagram is a rare witness to Ethiopic calendrical computation, illustrating how Alexandrian computus was adapted in the Geʿez tradition. It provides insight into the practical methods for determining movable feasts, especially Easter, in Ethiopian Christianity. Its relation to other Ethiopic computus manuscripts underscores the continuity of this tradition, while its Coptic terminology highlights cross-cultural exchange between Egyptian and Ethiopian Christian communities.

Historical context

The diagram belongs to the Ethiopic Christian tradition, which developed a distinctive computus for calculating liturgical dates, especially Easter, based on Alexandrian methods. The Geʿez tradition, centered in the Ethiopian Orthodox Tewahedo Church, adapted these methods from Coptic sources, often using 19-year Metonic cycles and epact calculations. The work survives in a single manuscript (betmas) of uncertain provenance, with no colophon or scribal note, so its exact date and place of composition are unknown. Paleographic analysis tentatively places it in the 17th–18th centuries, a period when Ethiopic computus manuscripts were produced in monastic scriptoria. The diagram’s use of Coptic terms (e.g., 'ʿĀw Daf, Qama Rafʿ') reflects the transmission of Alexandrian calendrical science into Ethiopic tradition. Its survival in a single witness suggests limited circulation, possibly within a specific monastic community. The lack of commentary in the edition means the diagram’s computational rules must be reconstructed from other Ethiopic computus manuals.

Apparatus · what the pipeline recorded

Annotation and terms

83 commentary units 22 structure22 background21 term12 caution3 dating1 reception1 scripture1 parallel 0 derived notes 23 open questions 22 narrative
What the kinds mean

Pipeline notes

  • limitThe English is a machine draft produced passage by passage from the transcribed Coptic; no human has verified it. The commentary is model-written and cites only keys the pipeline could resolve.
  • registerRegister: other in Geʿez; the English keeps the liturgical formulae and the vocatives rather than normalising them.
  • structurePassages: 22 narrative.
  • sourceSource edition: betmas — CC BY-SA 4.0 (per file); site footer states NC-SA - treat as NC

Term index

CopticRenderingCountFirst
no glossary terms recorded
LIT7122Diagram:1 · narrativehigh
Source
The headings of the boxes are the following:
English
The headings of the boxes are the following:
LIT7122Diagram:2 · narrativehigh
Source
ዓው ደ፡ ቀመ ር፡ , i.e. the lunar cycle or the major cycle;
English
ʿĀw Daf, Qama Rafʿ, i.e. the lunar cycle or the major cycle.
LIT7122Diagram:3 · narrativehigh
Source
ዓው ደ፡ አበ ቅቴ፡ , i.e. the epact cycle or the golden number;
English
ʿĀw Daf, ʾAbā Qəṭṭe, i.e. the epact cycle or the golden number;
LIT7122Diagram:4 · narrativehigh
Source
ልደ ተ፡ አበ ቅቴ፡ , i.e. the origin of the epact;
English
Ləddä Təśśaʿ, ʾAbā Qəṭṭe, i.e. the origin of the epact;
LIT7122Diagram:5 · narrativehigh
Source
ጰ ጕሜን፡ , i.e. the epagomenal days;
English
Ṗə Gʷəmen, i.e. the epagomenal days;
LIT7122Diagram:6 · narrativemedium
Source
ዓውደ ፡ ዓመት ፡ , i.e. the period of the year;
English
ʿawda ʿāmat, i.e. the period of the year;
LIT7122Diagram:7 · narrativemedium
Source
ዕለ ተ ዮሐን ስ፡ , i.e. the day of John;
English
ʿəla tə Yoḥannəs sə., i.e. the day of John;
LIT7122Diagram:8 · narrativehigh
Source
ጥንት ዮን፡ , i.e. the ṭǝntyon ;
English
The ṭǝntyon.
LIT7122Diagram:9 · narrativehigh
Source
አበቅቴ ፡ , i.e. the epact;
English
Abäqəte, i.e. the epact;
LIT7122Diagram:10 · narrativemedium
Source
መጥቅ ዕ፡ , i.e. the maṭqǝʾ ;
English
Maṭqǝʿ, i.e. the maṭqǝʿ;
LIT7122Diagram:11 · narrativemedium
Source
ሠር ቅ ፡ ሌ ለ ት፡ , i.e. the beginning of the night (which is "1" in all boxes);
English
The beginning of the night (which is "1" in all boxes);
LIT7122Diagram:12 · narrativemedium
Source
ጾመ ፡ አ ይሁድ፡ , i.e. the fasting of the Jews;
English
the fasting of the Jews
LIT7122Diagram:13 · narrativemedium
Source
ሠርቀ ፡ ሌሊ ት፡ , i.e. the beginning of the night (which is "10" in all boxes);
English
the beginning of the night (which is "10" in all boxes)
LIT7122Diagram:14 · narrativehigh
Source
መጸለት ፡ , i.e. the tabernacle, or the feast of the tabernacle;
English
the tabernacle, i.e. the feast of the tabernacle;
LIT7122Diagram:15 · narrativehigh
Source
ሠር ቀ፡ ሌሊ ት፡ , i.e. the beginning of the night (which is "15" in all boxes);
English
the beginning of the night (which is "15" in all boxes);
LIT7122Diagram:16 · narrativehigh
Source
ነነዌ ፡ , i.e. the fasting of Nineveh;
English
Nineveh, i.e. the fasting of Nineveh;
LIT7122Diagram:17 · narrativehigh
Source
በዓ ተ ጾም፡ , i.e. the beginning of fasting;
English
Baʿāta Ṣom, i.e. the beginning of fasting.
LIT7122Diagram:18 · narrativehigh
Source
ፈሥ ሕ፡ , i.e. the Jewish Easter;
English
Feś Ḥeś, i.e. the Jewish Easter;
LIT7122Diagram:19 · narrativehigh
Source
ሠ ርቀ፡ ሌ ሊት፡ , i.e. the beginning of the night (which is "11" in all boxes);
English
Feś Ḥeś, i.e. the Jewish Easter; Śerqe Lēlit, i.e. the beginning of the night (which is "11" in all boxes);
LIT7122Diagram:20 · narrativehigh
Source
ፋሲ ካ፡ , i.e. the Christian Easter.
English
Fasi Ka, i.e. the Christian Easter.
LIT7122Diagram:21 · narrativemedium
Source
The headings are taken from , according to
English
Fasi Ka, i.e. the Christian Easter.
LIT7122Diagram:22 · narrativemedium
Source
484 .
English
484.
Citation. Tergwame, “Calendrical diagram”, LIT7122Diagram:1, machine-draft, 2026. https://naxiai.com/christian/works/LIT7122Diagram#s1
Colophon. Source: betmas · licence: CC BY-SA 4.0 (per file); site footer states NC-SA - treat as NC · model: deepseek/deepseek-v4-flash:floor · provider: Relace · cost: $0.0057 · generated 2026-11-14.