We recently recognized that there are inconsistencies with dates in the DBpedia 
Sparql endpoint:
dates in the SPARQL endpoint are timezoned +02:00 while on the DBpedia pages 
and in the dumps they are not. Take for example the birth date of Adriana 
Ozores, which is 
dbpedia-owl:birthDate 1959-05-21 (xsd:date) on [1] and 
<http://dbpedia.org/ontology/birthDate> 1959-05-20+02:00 in the Sparql endpoint 
[2].

That is most probably an issue of Virtuoso and there already was an issue 
raised in 2011 on the virtuoso-users mailing list [3].

Anybody knows a workaround and possibly a way to prevent this in future?

Best
/Magnus

[1] http://dbpedia.org/page/Adriana_Ozores
[2] 
http://dbpedia.org/sparql?default-graph-uri=http%3A%2F%2Fdbpedia.org&query=SELECT+*+%7B%3Chttp%3A%2F%2Fdbpedia.org%2Fresource%2FAdriana_Ozores%3E+%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2FbirthDate%3E+%3Fo+%7D&format=text%2Fhtml&timeout=30000&debug=on
[3] 
https://www.mail-archive.com/virtuoso-users@lists.sourceforge.net/msg04547.html

-- 
Magnus Knuth

Hasso-Plattner-Institut für Softwaresystemtechnik GmbH
Prof.-Dr.-Helmert-Str. 2-3
14482 Potsdam

Amtsgericht Potsdam, HRB 12184
Geschäftsführung: Prof. Dr. Christoph Meinel

tel:     +49 331 5509 547
email:   magnus.kn...@hpi.de
web:     http://www.hpi.de/
webID:   http://magnus.13mm.de/


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