Fantasy and Science Fiction Book Club. 6:30 p.m., Blackstone Library, 4944 S. Lake Park Ave., 312-747-0511. Participants discuss Ann Leckie’s “Ancillary Justice.”
Lessons and Carols for Christmas Eve. 4-5 p.m., Rockefeller Chapel, 5850 S. Woodlawn Ave., 773-702-2100, free. Rockefeller’s traditional candlelit Christmas service, featuring carols sung by the Decani, the Rockefeller Children’s Choir and the congregation along with organ, brass and timpani. Children will also enact the story of the Nativity. An offering will be taken up for those in need.