Politics
Britain: Churchill broadcasts appeal to neutral States to join Britain and France in resisting Nazi aggression. He compares their timid conduct with the crocodile’s victims – each hoping to be eaten last.
Dutch Foreign Minister rejects appeal, January 25.
Air War
Finland: Russian bombers start big fires in Turku and Hangö.
Western Front
Hitler reduces ‘alert period’ before implementation of Operation ‘Fall Gelb’ (the attack in the West) from 4 days to 24 hours for security reasons.
Home Fronts
Britain: London has its coldest day since 1881, with 11 °C (20° F) of frost.