Chalica is a holiday celebrated by Unitarian Universalists. It traditionally begins on the first Monday in December and lasts seven days, though a seven-week variant beginning in January is also observed. On each of the seven nights (or weeks), a different principle of Unitarian Universalism is honored. On each day, a chalice is ignited, the day's principle is read, and ways of honoring the principle are enacted, such as volunteering or donating to a social justice cause. There is no rule for how the chalice or display should look, but there are traditionally seven candles around the chalice, one for each principle. Activities on each day vary, and may include discussions, group activities, and songs.
To solve the problem of having only a single week in which to cram seven nonnominal deeds for the seven Unitarian Universalist principles, the Unitarian Universalist Church of Bowling Green in Kentucky extends Chalica into a seven-week observance. Further, Chalica at the Unitarian Universalist Church of Bowling Green starts on the first Sunday in January as an extension of the New Year's resolution concept.
- Skinner, Donald E. (7 December 2009). "Chalica, new weeklong UU holiday, slowly gains adherents". Retrieved 5 August 2015.
- "Celebrating Chalica". uua.org. Unitarian Universalist Association. Retrieved 5 August 2015.
- "Chalica – A time of reflection and renewal". UUBGKY.org. Unitarian Universalist Church of Bowling Green.
- Klink-Zeitz, Kathy. "Chalica.info: History". chalica.blogspot.com. Retrieved 5 August 2015.
- Richards, Michelle (6 December 2010). "Celebrating the winter holidays". Archived from the original on 2010-12-10. Retrieved 5 August 2015.
- "Some UU Traditions". brisbaneuu.org.au. Brisbane Unitarian Universalist Fellowship Home Page. Retrieved 5 August 2015.
- Amanda Gregory (December 2, 2013). "Another Winter Holiday!?". The Huffington Post. Retrieved December 6, 2016.
- Meredith Plummer (November 20, 2013) . "My Chalica Book: A Beginner's Guide" (PDF) (Second ed.). First Unitarian Church of Cincinnati. Retrieved December 6, 2016.
- Van Leer, Lois E. (11 December 2014). "Chalica". wuuc.org. Woodville Unitarian Universalist Church. Retrieved 5 August 2015.
- Donald E. Skinner (December 7, 2009). "Chalica, new weeklong UU holiday, slowly gains adherents". Retrieved December 6, 2016.