How old r the boys in 5sos 2014?

In 2014, the members of 5 Seconds of Summer (5SOS) were as follows: Luke Hemmings was born on July 16, 1996, making him 18 years old; Michael Clifford was born on November 20, 1995, so he was 18; Calum Hood was born on January 25, 1996, making him 18; and Ashton Irwin was born on July 7, 1994, so he was 20 years old.