620
year
Year 620 (DCXX) was a leap year starting on Tuesday of the Julian calendar. The designation 620 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Events
By place
Byzantine Empire
Byzantine–Sassanid War: King Khosrau II captures Ancyra, an important Byzantine military base in central Anatolia. After the conquest of Egypt and Palestine, he restores the Persian Empire as it existed in 490 BC under Darius I.
The Slavs invade the area around Thessaloniki, which is unsuccessfully besieged. The city becomes a Byzantine enclave surrounded by Slavic territory. Urban life disappears and many towns in the Balkan Peninsula become villages.
Britain
The Angles under King Edwin of Northumbria invade Rheged ("Old North") in Northern England, and expel King Llywarch Hen. He flees to Powys, and becomes a famous bard. Edwin's armies fight against Gododdin and Strathclyde.
Asia
King Pulakeshin II defeats the Harsha army on the banks of the Narmada River.
This brief starts where responsible research should: with the source description of “620” as year. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the general reference register because the source frames it as year. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jul 18, 2026. The linked authority identifier is Q33238. None of the 0 selected statements returned an explicit reference.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “620”, its source revision and the description used here.
- Expand the search: follow 620 primary sources, 620 archive and year research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “620”?
- Which institution is responsible for the underlying evidence?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “620” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.