https://www.cnbc.com/2017/12/04/facebook-ceo-mark-zuckerberg-is-taking-off-december-as-paternity-leave.html

On Saturday, billionaire tech entrepreneur and Facebook CEO Mark Zuckerberg signed off for the month of December.

"I'm going on parental leave for December to be with August and Max, so you'll hear from me a little less. We have a couple more Facebook and philanthropy announcements this year and then I'll see you all in 2018!" Zuckerberg writes on his Facebook page.