I hate to say it, but it depends...on what schema language you’re using.  Because of the issues outlined here https://github.com/TEIC/TEI/issues/1344, whether your dating system has a year zero or not will depend on whether you use Relax NG (no year zero) or XML Schema (has year zero). If there is a year zero, (CE) centuries should be X00-X99. It’s my sense that most TEI rely on Relax NG.

And, yes, this is completely bonkers.


On Oct 31, 2018, at 6:41 AM, James Cowey <[log in to unmask]> wrote:

Which (101-200 = 2nd century AD; 201-300 = 3rd century AD) is what the project


has been using since 2010



here is the relevant section


all the best


Zitat von Franz Fischer <[log in to unmask]>:

Am 30.10.2018 um 23:07 schrieb Paul Schaffner:
For ease of conversion, I would regard "13th century" as = "12[0-9][0-9]"
It's easier but not correct. The 13th cent. lasted from 1st of January
1201 through 31 December 1300.
As for the quarters and halves, I suppose consistency demands
that I take first quarter to be 1200-1224 etc.
Same here, it starts and ends one year later.

Though I don't know
that I do.

The Middle English Dictionary is inconsistent in applying its
policy about 'circa' and 'ante' but its stated policy is

a1400 = 1375-1400
?a1400 = ?1375-1400
c1450 = 1425-1475 (i.e. 50 years, more or less: probably should be -1474)
?c1450 = ?1425-?1475

Then there are those who use
s.15in, s.15ex, and s.15 1/3,  s.15 2/4,  s.15 med, etc.
I often have to guess when converting those to MED dates unless
the author or publisher has a stated or standing explanation.


On Tue, Oct 30, 2018, at 17:02, Matthew James Driscoll wrote:
Dear all,

Sorry (really) to bring the subject up again, but I just wanted to ask
what the general feeling was as regards converting centuries and parts
thereof to @notBefore and @notAfter dates (when dating manuscripts). So,
does "13th century" mean:

a)       1201-1300

b)      1200-1299

c)       1200-1300
By parts thereof I obviously mean things like "the first quarter of the
13th century"; does that start at 1200 or 1201 etc.?
And how, dare I ask, ought one to interpret "circa"? +/- 5, 10, 15, 25
All answers gratefully received. (I realise it does, but please don't
say "it depends".)


M. J. Driscoll
Professor of Old Norse Philology

University of Copenhagen
Institute for Nordic Studies and Linguistics
Arnamagnæan Institute
Njalsgade 136
DK-2300 Copenhagen S

Dr. Franz Fischer
Cologne Center for eHumanities
Universität zu Köln, Universitätsstr. 22, D-50923 Köln
+49 - (0)221 - 470 - 4056
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