I predicted the articles of impeachment would be formally presented to the Senate Friday, just prior to the 3-day holiday weekend.
According to the news, the articles were walked over today by the House. The Senate will have the House managers present the articles to the Senate in a formal setting tomorrow.
I missed it by a day.

Since the Senate will likely be on a short day Friday to leave for the holiday weekend, the Senate won't be taking up the matter until Tuesday. This week, the presiding judge Chief Justice Roberts will be sworn in as well as all 100 Senator jurors.
The Senate has 30 days to take up impeachment and begin the process of holding the trial. Once they start, they can't take up any other matter. Senators are barred from speaking inside the hearing and outside. All questions from the Senators must be submitted to the Chief Justice in writing.
Pelosi just handed Biden a less competitive Iowa caucus in 2 1/2 weeks, since Bernie and Pocahontas are stuck in the impeachment trial.
Pelosi said this impeachment will be a permanent stain on the Trump presidency regardless of the trial outcome.
That's really all this was about since it started 3 years ago. She isn't interested in the damage this can do to the nation. She's only interested in political power and who gets to use it.