Turns out it's the last Sunday before advent, or, as it happens, last Sunday. And everyone knows this (even my parents, who make Christmas Puddings in mid-October to give them more time to mature, and also from when it used to be half-term and Dad could get us to help to stop us running wild for a couple of hours).
Everyone else also tells me it's called Stir-Up Sunday, because you make sure that everyone gets to stir-up the pudding and make a wish. Actually it's the other way round. The Collect for the day, in The Book of Common Prayer says:
Stir up, we beseech thee, O Lord, the wills of thy faithful people; that they, plenteously bringing forth the fruit of good works, may of thee be plenteously rewarded; through Jesus Christ our Lord. Amen.
It's because the words stir-up and fruit appear in the service that people began to stir-up their puddings on that Sunday.
Am I the only one entertained by this?
Those of you who stirred up on Sunday, how was it?
 Everything else includes such things as planting parsley, slaughtering animals, make your one bet of the year and find it difficult to get a drink in Ireland
 Good Friday
 Usually the 2nd Saturday in April
 Good Friday
 Our Ancient and Traditional Christmas Pudding Recipe came from the Bon Viveur column in the Daily Telegraph in the late 60s. After researching this information I now know this means it's a Fanny Craddock Recipe. Excellent! Why don't modern TV Cooks dress like that?