Holmes, Martin, Janelle Jenstad, Nathan Phillips, Sarah Milligan, and Cameron Butt. “Encoding Historical Dates Correctly: Is it Practical, and is it Worth it?” DH 2013. Lincoln, NB. 2013-07-19.
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Encoding Historical Dates Correctly: Is it Practical, and is it Worth it?
1. DH 2013, Lincoln, Nebraska
Encoding historical dates correctly:
Is it practical, and is it worth
it?
Janelle Jenstad, Martin Holmes, Nathan Phillips,
Sarah Milligan, and Cameron Butt
University of Victoria
mapoflondon.uvic.ca
@janellejenstad
@MoEMLondon
11. Calendrical chaos between countries
1. Julian versus Gregorian calendar
● 1582: Pope Gregory's new calendar
● 1752: English adoption of Gregorian calendar
2. Start of New Year
● March 25, from 1155 to 1752 in England
12. Problem? What problem?
We asked a number of colleagues on cognate
projects for advice:
● It's only a few days. How important could it be?
● Proper historians know perfectly well what a particular
date means.
● It's definitely a mess, but there's no workable solution.
● I don't want to think about it.
13. This problem: Interoperability
● You: a historian of 17thc Holland.
● Me: a researcher on 17thc English literary
texts.
● Your eventography and my eventography get
all interoperable with each other.
● Result: a very silly timeline.
14. Our project
The Map of Early Modern London
(mapoflondon.uvic.ca)
● Covers 1550-1650
● 4105 dates or date ranges encoded so far
● Principal challenge: Stow's Survey of London
● For any date before 1752, we have to STOP before
we tag; W3C standard is meaningless
<date when="1603-03-24">
15. Our goals in encoding dates
1. We want to know WHEN an event occurred
relative to other events (astronomical years).
2. We want dates to be computable and
translatable to other calendars.
3. We want to interleave our dated events with
events in other projects without appearing to
"time travel" like William of Orange.
16. Solutions?
Fact: TEI uses ISO and W3C standards,
which presuppose Gregorian dates.
A solution: convert all dates to Gregorian
before encoding
● Elizabeth died on April 3, 1603 (proleptic Gregorian).
Fact: TEI uses ISO and W3C standards,
which presuppose Gregorian dates.
A solution: convert all dates to Gregorian
before encoding
● Elizabeth died on April 3, 1603 (proleptic Gregorian).
17. Problems with that solution
Produces historical disorientation,
because we "know" that Queen Elizabeth
died on March 24, 1602/3 …
… and it's laborious.
18. Our solution
● Use full capability of TEI
● Class of attributes: att.datable.custom
● "provides attributes for normalization of
elements that contain datable events to a
custom dating system"
19. Attributes we need
1.@when-custom fixed date→
• @notBefore-custom
• @notAfter-custom ...
2.@datingMethod indicates the calendar→
assumed by the value of the attribute(s) above
3.@calendar indicates the calendar used in the→
text being marked up
20. Various reckoning systems
Primary texts reckon time by:
regnal years ("the third of King John")
papal years
mayoral years
Anno Mundi (years since Creation)
legal terms
Saint's days
Custom MoEML @calendar values include:
calendar="mol:anno_mundi"
24. So ...
… is it practical, and worthwhile to encode
historical dates correctly?
YES!
It is practical,
and it is worth it!
25. Credits and thanks
Social Sciences and Humanities Research Council
Humanities Computing and Media Centre, UVic
MoEML Team, especially Nathan Phillips, Sarah Milligan,
and Cameron Butt
Correspondence: jenstad@uvic.ca
Hinweis der Redaktion
William of Orange set sail from Hellevoetsluis (ˌɦɛləvutˈslœy̆s) on November 11, 1688 with over two hundred transport ships, fifty warships, over 15,000 men and several thousand horses.
William of Orange set sail from Hellevoetsluis (ˌɦɛləvutˈslœy̆s) on November 11, 1688 with over two hundred transport ships, fifty warships, over 15,000 men and several thousand horses.
William of Orange set sail from Hellevoetsluis (ˌɦɛləvutˈslœy̆s) on November 11, 1688 with over two hundred transport ships, fifty warships, over 15,000 men and several thousand horses.
William of Orange set sail from Hellevoetsluis (ˌɦɛləvutˈslœy̆s) on November 11, 1688 with over two hundred transport ships, fifty warships, over 15,000 men and several thousand horses.
Also new attributes to express duration of event: @from-custom @to-custom