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.