dimanche <date xmlns="http://www.tei-c.org/ns/1.0" calendar="#julian #gregorian" when="1829-10-18">6/18</date> <choice xmlns="http://www.tei-c.org/ns/1.0"> <abbr>Oct.</abbr> <expan>Octobre</expan> </choice><supplied xmlns="http://www.tei-c.org/ns/1.0" cert="high">,</supplied> <lb xmlns="http://www.tei-c.org/ns/1.0" />pour la <choice xmlns="http://www.tei-c.org/ns/1.0"> <abbr>long</abbr> <expan>longitude</expan> </choice>