People wishing to celebrate the winter solstice are being urged to stay away from Stonehenge today because it will not be open, according to

The solstice is celebrated on the shortest day of the year, usually December 21, marking the first day of the season of winter.

But this year the druid and pagan community will mark the ancient tradition on the morning of Tuesday, December 22, which is officially the shortest day of the year.

Solstice does not always fall on December 21 because the modern calendar of 365 days a year, with an extra day every four years, does not correspond exactly to the solar year of 365.2422 days.

English Heritage says Stonehenge will open at about 7.30am on Tuesday for people wishing to watch the sun rise shortly after 8am.

Pagans and druids are expected to carry out their traditional ceremonies along with a few hundred members of the public.

Stonehenge will not be open earlier than its usual visitor opening time of 9.30am today.