Calendar for Jan. 15

FRIDAY

National Hat Day

Children are invited to wear their favorite hat and make one from 10 a.m. to 5 p.m. at Pretend City Children’s Museum, 29 Hubble, Irvine. Tickets are $12.50. For more information, call (949) 428-3900 or visit pretendcity.org.

‘Yes, Indeed!’

JazzReach and The Metta Quintet will present “Yes, Indeed!” at 7:30 p.m. at Irvine Barclay Theatre, 4242 Campus Drive. Tickets are $15 to $20. For more information, call (949) 854-4646 or visit thebarclay.org.

FRIDAY TILL JAN. 21

Irvine International Film Festival

Irvine International Film Festival will present a variety of films from the around the world beginning at 8 p.m. Friday at Laguna Hills Cinema, 24155 Laguna Hills Mall Road. Tickets are $40 to $200. For more information, call (949) 800-6163 or visit irvinefilmfest.com.

SATURDAY

Arthur Benjamin: ‘Mathemagician’

Arthur Benjamin, a professor of mathematics at Harvey Mudd College, will demonstrate how to mentally add and multiply numbers faster than a calculator or how to figure out the day of the week of any date in history. The event is at 1 p.m. at Irvine Barclay Theatre, 4242 Campus Drive. Tickets are $15. For more information, call (949) 854-4646 or visit thebarclay.org.