I'm creating an online advent calendar for work. I always thought that they started on 1st December, running through to Christmas Eve. But now I've discovered that official advent starts a couple of days earlier this year.
Do I need to start the calendar from the official first day of advent on 29 November? Or is it culturally acceptable to start on 1st December?
Do you start with no.1, or do you start with no.24 and work backwards through the numbers?
This is for a mainstream fun project, not for a religious audience, although there may be religious people amongst them. I don't want to cause offence to people who are devout, or to get it 'wrong'.
Please enlighten me!