<date xmlns="http://www.tei-c.org/ns/1.0" when="1829-10-16" calendar="#julian #gregorian"> <hi rendition="#sup">4</hi> / <hi rendition="#sub"> <subst> <del rendition="#ow">15</del> <add place="across">16.</add> </subst> </hi> <choice> <abbr>Oct.</abbr> <expan>October</expan> </choice> </date> Freytag