Man pages matching name curses::ui::dialog::calendar in section 3pm:

Curses::UI::Dialog::Calendar.3pm.en	debian 10 / libcurses-ui-perl
Curses::UI::Dialog::Calendar.3pm.en	debian 11 / libcurses-ui-perl
Curses::UI::Dialog::Calendar.3pm.en	debian 12 / libcurses-ui-perl