What is the 24-hour rule with Lufthansa?

𝑳𝒖𝒇𝒕𝒉𝒂𝒏𝒔𝒂'𝒔 24-𝒉𝒐𝒖𝒓 𝒓𝒖𝒍𝒆 𝒂𝒍𝒍𝒐𝒘𝒔 𝒑𝒂𝒔𝒔𝒆𝒏𝒈𝒆𝒓𝒔 𝒕𝒐 𝒄𝒂𝒏𝒄𝒆𝒍 𝒕𝒉𝒆𝒊𝒓 (𝟭804-853-9001{𝕌𝕂}//𝟭804-853-9001{𝕌𝕊}) 𝒇𝒍𝒊𝒈𝒉𝒕 𝒃𝒐𝒐𝒌𝒊𝒏𝒈 𝒘𝒊𝒕𝒉𝒊𝒏 24 𝒉𝒐𝒖𝒓𝒔 𝒐𝒇 𝒑𝒖𝒓𝒄𝒉𝒂𝒔𝒆 𝒇𝒐𝒓 𝒂 𝒇𝒖𝒍𝒍 𝒓𝒆𝒇𝒖𝒏𝒅, 𝒑𝒓𝒐𝒗𝒊𝒅𝒆𝒅 𝒕𝒉𝒆 𝒇𝒍𝒊𝒈𝒉𝒕 𝒅𝒆𝒑𝒂𝒓𝒕𝒔 𝒂𝒕 𝒍𝒆𝒂𝒔𝒕 𝒔𝒆𝒗𝒆𝒏 𝒅𝒂𝒚𝒔 𝒇𝒓𝒐𝒎 𝒕𝒉𝒆 𝒃𝒐𝒐𝒌𝒊𝒏𝒈 𝒅𝒂𝒕𝒆(𝟭804-853-9001{𝕌𝕂}//𝟭804-853-9001{𝕌𝕊}) .5 𝒅𝒂𝒚𝒔 𝒂𝒈𝒐