The plan I'm working to at the moment is Managed Open Access on the morning of 22 December. Just as the Managed Open Access for the Autumn Equinox was on the morning of 23 September, the sunrise following the autumn equinox date of 22 September. Having said that I know people will be gathering on 21 December to request access to the stones. My plan is subject to change up the moment before lol.
The bards site pointed at by Andy Chance is actually for a ticketed early Winter Solstice event on 13 December.
Matthew