https://knowt.com/note/f85da579-ef55-4ea2-83a3-5bfd73eef1f3/KLM-24-7-HELPWhat-is-the-24-hour-rul

https://knowt.com/note/f85da579-ef55-4ea2-83a3-5bfd73eef1f3/KLM-24-7-HELPWhat-is-the-24-hour-rul