The Two Sisters
"One day, two sisters decided to clean out the old shed at the bottom of their garden. When they had finished the cleaning, one of them had a dirty face and the other had a clean face. The sister with the clean face went and washed her face, but the girl with the dirty face did not wash. Why should this be so?
A man & his family lay out blankets & lie down, watching the sky for hours, even though explosions can be heard nearby. Why?
Hint: The date is important.