https://innovationspace.ansys.com/forum/forums/topic/understanding-what-is-the-24-hour-rule-for-lufthansa-lh_guide/
https://innovationspace.ansys.com/forum/forums/topic/understanding-what-is-the-24-hour-rule-for-lufthansa-lh_guide/https://innovationspace.ansys.com/forum/forums/topic/understanding-what-is-the-24-hour-rule-for-lufthansa-lh_guide/