Man pages matching name date::pcalc::object in section 3pm:

Date::Pcalc::Object.3pm.en	debian 10 / libdate-pcalc-perl
Date::Pcalc::Object.3pm.en	debian 11 / libdate-pcalc-perl
Date::Pcalc::Object.3pm.en	debian 12 / libdate-pcalc-perl