<date xmlns="http://www.tei-c.org/ns/1.0" when="1829-10-02" calendar="#julian #gregorian"> <hi rendition="#sup">20 <choice> <abbr>Sept</abbr> <expan>September</expan> </choice> </hi> / <hi rendition="#sub">2 <choice> <abbr>Oct</abbr> <expan>October</expan> </choice> </hi> </date> Freytag