D-Day. The most important weather forecast in history! A Post Mistress in Ireland had the answer. 

Today is the 5th of June, 2024. Exactly 80 years ago, General Eisenhower and the Allied Expeditionary Force commanders had to take a huge gamble. Would the weather on the 6th improve enough to give the order to go?
A young Post Mistress from Blacksod, Ireland had the answer.