Man pages matching name nanosleep in section 2:

nanosleep.2.en	debian 10 / manpages-dev
nanosleep.2.es	debian 10 / manpages-es
nanosleep.2.ja	debian 10 / manpages-ja-dev
nanosleep.2.pl	debian 10 / manpages-pl-dev
nanosleep.2.en	debian 11 / manpages-dev
nanosleep.2.fr	debian 11 / manpages-fr-dev
nanosleep.2.ja	debian 11 / manpages-ja-dev
nanosleep.2.en	debian 12 / manpages-dev
nanosleep.2.fr	debian 12 / manpages-fr-dev
nanosleep.2.ja	debian 12 / manpages-ja-dev
nanosleep.2.ru	debian 12 / manpages-ru-dev
nanosleep.2.en	debian 13 / manpages-dev
nanosleep.2.fr	debian 13 / manpages-fr-dev
nanosleep.2.ja	debian 13 / manpages-ja-dev
nanosleep.2.pl	debian 13 / manpages-pl-dev
nanosleep.2.ro	debian 13 / manpages-ro-dev
nanosleep.2.ru	debian 13 / manpages-ru-dev