I'll plant my flag alongside T42's. Regardless of what actual religion (or none) that you espouse, the thing that is currently about to be celebrated, is Christmas, a Christian festival with assorted bits of ancient paganism and other dross thrown in. By all means celebrate something else of your choice, but this one is Christmas, not "Solstice", or "holidays". By all means, if you are non-Christian, just use it as an excuse for a bit of merriment (like my Hindu and Muslim friends do) but don't try to rename it.