{#KLM~Guide!Rule}What is the 24-hour rule for KLM?{#KLM~Guide!Rule}What is the 24-hour rule for KLM?{#KLM~Guide!Rule}What is the 24-hour rule for KLM?{#KLM~Guide!Rule}What is the 24-hour rule for KLM?{#KLM~Guide!Rule}What is the 24-hour rule for KLM?{#KLM~Guide!Rule}What is the 24-hour rule for KLM?