Seleucid Era (AG) Converter
Convert years to and from the Seleucid era (anno Graecorum) under either attested new-year convention: the Macedonian autumn year from October (default) or the Babylonian spring year from April; SE 1 began in autumn/spring of 312/311 BC.
Description
Convert years to and from the Seleucid era (anno Graecorum) under either attested new-year convention: the Macedonian autumn year from October (default) or the Babylonian spring year from April; SE 1 began in autumn/spring of 312/311 BC.
Seleucid Era (AG) Converter: Convert years to and from the Seleucid era (anno Graecorum) under either attested new-year convention: the Macedonian autumn year from October (default) or the Babylonian spring year from April; SE 1 began in autumn/spring of 312/311 BC.
When to use Seleucid Era (AG)
Use this palaeographic utility to apply a stated dating, script, abbreviation, codicological, metrological, layout, or condition rule consistently while preparing manuscripts for scholarly review.
- Direction
- Direction of conversion.
- Year
- Year in the source reckoning.
- Month
- Month of the date; determines which Seleucid year it falls in.
- New year
- New-year convention for the era.
How Seleucid Era (AG) works
Convert years to and from the Seleucid era (anno Graecorum) under either attested new-year convention: the Macedonian autumn year from October (default) or the Babylonian spring year from April; SE 1 began in autumn/spring of 312/311 BC. 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
- Converted year
- Converted year in the target reckoning.
- Counting era
- Which reckoning convertedYear counts.
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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