Man pages matching name ddate in section 1:

ddate.1.en	debian 10 / ddate
ddate.1.de	debian 10 / manpages-de
ddate.1.es	debian 10 / manpages-es-extra
ddate.1.ja	debian 10 / manpages-ja
ddate.1.en	debian 11 / ddate
ddate.1.de	debian 11 / manpages-de
ddate.1.es	debian 11 / manpages-es
ddate.1.fr	debian 11 / manpages-fr
ddate.1.en	debian 12 / ddate
ddate.1.de	debian 12 / manpages-de
ddate.1.es	debian 12 / manpages-es
ddate.1.fr	debian 12 / manpages-fr