It is also when the BBC have their Writersroom, Drama Script Room submissions (now there's a snappy title).
They only do this for a few weeks, rather than the open-ended submission process they used to have. So, between 11th December 2017 and 15th January 2018 they will accept unsolicited submission of screenplays for a number of different formats: TV, film, radio, stage or on-line.
Anyone can send in one piece of work and they'll look at it: yes, only one per person. And it has to be the correct format, but otherwise, anything goes. There is a later submission window for comedy, usually late January until April-May, if there is a piece that fits more into that classification.
With this being the only time the BBC will look at drama before late 2018, I'm tidying up a screenplay I've been working on and will submit in the coming week.
Then the eating, drinking and partying can really start.