REDDING, Calif. -

Friday is the first full day of summer, and a celebration marked the occasion at Turtle Bay in Redding.

The Summer Solstice Celebration ran from 11 a.m. until 2 p.m. Friday.  Summer officially began at 10:04 p.m. (Pacific time) on  Thursday.

Celebrants participated  in all kinds of solstice-related activities, but the main event was  and watching as the shadow of the Sundial Bridge moves over the noon hour marker. The bridge's sundial is the most accurate during the solstice.

The Shasta Astronomy Club provided sun-scopes so that people could look at the sun without injuring their eyes. 

“They have scopes set up with special filters," said Amber Davis, Natural Science Educator at Turtle Bay Exploration Park. "It's very important if your gonna (sic) see the sun you have proper equipment and use special filters.”

Visitors were also able to learn about the importance of protecting skin from the sun.

Schreder Planetarium was also present,  selling tickets to their 'Secrets Of The Sun' show.