What day of the week was December 1, 1919?

The day of the week December 1st, 1919 fell on was a Monday.

There were 24 days until Christmas.

Lady Astor becomes the first female Member of Parliament to take her seat in the House of Commons of the United Kingdom. (She had been elected to that position on November 28.) The first issue of Diário de Noite is published from Goa.