Chronology - Topics

What actually survives a century underground and what turns to mush The Crypt of Civilization stays sealed until 8113 When two chronicles contradict each other the first move is to compare their dates of composition not their facts Radiocarbon dates and king lists disagree more often than textbooks admit Chinese dynastic periodization does not map onto European era names How do you date an undated early modern letter when the calendar itself changed mid-century? Champollion cracked hieroglyphs by treating cartouches as royal names Roman coin hoards date sites better than the written histories do An outline of history and events for the French Revolution that stops in 1794 confuses anyone asking about Napoleon. An event with no surviving witnesses or documents can hardly be dated at all. Geologists measure an epoch in strata while historians declare an era by proclamation How do you write early thirteenth century so nobody reads it as the 1300s? Japanese reign names reset the calendar with every emperor — how do you convert them? Radiocarbon dates come with a range and a calibration curve rather than a year Double-entry bookkeeping taught merchants to think in irreversible sequences Egyptian king lists overlap because co-regencies were normal How ancient historians cross-dated events using an eclipse both sides recorded Stratigraphy tells you what came later but never how much later Regnal years make you count from the king's accession and not from January The lunar calculation for Easter is the reason the Gregorian calendar exists at all Drawing a timeline when events last for decades instead of happening on a day When a country moves its clock the old timestamps become ambiguous A parish register's entries are not in the order the volume was written The date of the Bronze Age collapse keeps sliding by decades Chronicles survive in later copies so the manuscript stemma is part of the argument The Sumerian King List gives some kings reigns of thousands of years — how is it a source at all? Lists of historical figures by century are a starting point and a trap for lazy essays. Ethiopia's calendar is seven or eight years behind everyone else's A coin under a floor dates the building from below and that is what terminus post quem means Ice cores and lake varves give annual layers that radiocarbon cannot Why a finding aid arranged by date fails a researcher who needs it by place Turning an oral history interview into a chronology reorders the speaker's meaning