Is the 2012 winter solstice, the final date on the Mayan calendar, the end of it all or a launching point for transformation?

Earth Rhythms, organizers of Winter SolstiCelebration, say it’s both.

The tradition comes to an end, according to organizer Amy Martin, with the 20th and final Winter SolstiCelebration and Tranformation, celebrating the regenerative power of darkness and the redemptive grace of light, at Cathedral of Hope on Friday. SolstiCelebrators spanning all 20 years of the event return to Dallas from around the country to explore how the idea of transformation has shaped their own lives and the course of man, with song, ritual, dance, magic, music, poetry, ceremony, circus arts, meditation, storytelling and conscious movement.

The event began 20 years ago with about 100 people gathered for the solstice in a rented building on White Rock Lake. Recent events have drawn closer to 1,000 people from a variety of faiths. It will end as it began two decades ago, with the beat of the drum and the words of a poet.

Bring a flashlight to participate in the ceremony.

Organizers ask everyone to bring a canned food item for the Resource Center Dallas Food Pantry and donations of warm winter clothing.

Cathedral of Hope, 5910 Cedar Springs Road. 7–9 p.m. Tickets $17 in advance, $20 at the door. 214-261-5599.