Hijri-Julian Manuscript Converter
Convert colophon dates between the Hijri calendar and the Julian calendar using the arithmetical (tabular) Islamic calendar with the civil epoch of Friday 16 July 622 CE (JDN 1948440); observed calendars can differ by a day.
Description
Convert colophon dates between the Hijri calendar and the Julian calendar using the arithmetical (tabular) Islamic calendar with the civil epoch of Friday 16 July 622 CE (JDN 1948440); observed calendars can differ by a day.
Hijri-Julian Manuscript Converter: Convert colophon dates between the Hijri calendar and the Julian calendar using the arithmetical (tabular) Islamic calendar with the civil epoch of Friday 16 July 622 CE (JDN 1948440); observed calendars can differ by a day.
When to use Hijri-Julian Manuscript
Use this palaeographic utility to apply a stated dating, script, abbreviation, codicological, metrological, layout, or condition rule consistently while preparing manuscripts for scholarly review.
- Mode
- Direction of conversion.
- Hijri year
- Hijri year.
- Hijri month
- Hijri month (1 Muharram to 12 Dhu al-Hijja).
- Hijri day
- Hijri day of month.
- Julian year
- Julian calendar year.
- Julian month
- Julian calendar month.
- Julian day
- Julian day of month.
How Hijri-Julian Manuscript works
Convert colophon dates between the Hijri calendar and the Julian calendar using the arithmetical (tabular) Islamic calendar with the civil epoch of Friday 16 July 622 CE (JDN 1948440); observed calendars can differ by a day. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.1
- Hijri year
- Hijri year.
- Hijri month
- Hijri month 1-12.
- Hijri day
- Hijri day of month.
- Julian year
- Julian calendar year.
- Julian month
- Julian calendar month 1-12.
- Julian day
- Julian day of month.
- JDN
- Julian day number of the date.
Limitations and assumptions
- Script and manuscript evidence varies by language, region, institution, period, scribe, material, restoration, and cataloguing convention. A heuristic flag or score is not an authoritative date, hand attribution, reading, provenance, or conservation diagnosis.
- Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.
Alternative or Complementary approaches
Retain page images, scale, foliation, material, provenance, diplomatic transcription, uncertainty, and comparison exemplars; confirm conclusions with codicological context and specialist judgment.
References
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Chronology — Wikipedia contributors
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