Man pages matching name mod_auth_tkt in section 3:

mod_auth_tkt.3.en	debian 10 / libapache2-mod-auth-tkt
mod_auth_tkt.3.en	debian 11 / libapache2-mod-auth-tkt
mod_auth_tkt.3.en	debian 12 / libapache2-mod-auth-tkt