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https://washingtonstate.forums.rivals.com/threads/understanding%E2%84%A2%F0%9D%93%9B%F0%9D%93%A4%F0%9D%93%95%F0%9D%93%A3%F0%9D%93%97%F0%9D%93%90%F0%9D%93%9D%F0%9D%93%A2%F0%9D%93%90-what-is-the-24-hour-rule-for-lufthansa-faqs-call.27702/