Heraclius departs on campaign against Persia
Theophanes reports that Heraclius left Constantinople on the Monday evening immediately following Easter to campaign against Persia.
What this does and does not establish
De Boor I Greek text, preserved here through OCR. The excerpt retains the OCR spelling ΙΠερσίδος. Nearby narrative specifies departure from the capital and travel by sea toward Pylai. The year is established through the April and indiction anchors, not subtraction from the AM heading.
- Read through an AI working translation.
- Region
- Europe
- Theme
- Politics and institutions
- Kind of record
- Placed in a year. A source places this in one year. It is listed under that year; no day precision is invented.
How it is dated
- Date reference
- April, indiction 10; Monday evening following Easter on 4 April
- How we use it
- Year-level placement is limited to the dated source entry.
The date reference is this project’s reading of the source’s date. It may give an era name, a reign or a calendar in a normalised form rather than in the source’s own words; the dating notes say what the source prints.
Dating notes from the research record
Read theophanes.txt lines 27273–27322 and 27359–27418: the narrative supplies Heraclius’s regnal context, Easter on 4 April, indiction 10, and departure the following Monday evening, hence 5 April 622 Julian. Independently examined paschale-690-729.txt lines 968–999, whose chronological sequence places indiction 10 with Heraclius’s twelfth year under 622. April precedes the September indiction boundary.
File names and line numbers in these notes, and in the limits above, refer to the project’s retained copies of the cited sources. Names such as calendar_headers are the project’s calendar look-ups, and “the investigator” is the research step that prepared the record.
Sources and quoted text
Line and character numbers under “Location” refer to the project’s retained copy of the source. For database rows, “Edition” names the batch of rows that was fetched together.
Source 1 · Supports the statement
Theophanes, Chronographia
Theophanes the Confessor
Quoted text (Greek)
ἐκίνησε κατὰ ΙΠερσίδος.AI working translation into English; not official or authoritative
He set out against Persia.
Source credit and reuse conditions recorded for this source: Theophanes, Chronographia, C. de Boor, vol. I, Greek text (1883), Internet Archive OCR; project English working translation.
Exact source version
91c1f3829c62b52540600cb371127b160f050f2dd76399dd0018c1a7f5cf0494Checks and changes
Source checked 2026-11-05. An independent AI evidence review supports this bounded, attributed wording. That review does not guarantee historical truth. How records are checked
No correction has been made to this record’s statement or limits.
Revision s601_western_gap_originals_622_0
Exact revision fingerprint
510c0aa1d31f622576d2cee93334bb6d6fd770493460082cab4b63cbcb619c17