Husband feeling baby kick???

When did everyone’s husband or boyfriend start feeling the baby kick from the outside of your stomach? I am just about 19 weeks. I’ve been feeling the baby move since week 16 and then started feeling kicks the last 4 days. I am 5’9 and 120 pounds. My stomach is pretty flat I just started kinda of showing and my husband has been able to feel some of the strong kicks the makes. My friends boyfriend/husband have been able to feel the baby from the outside of the stomach until 22-23 weeks. Is feeling it at almost 19 weeks normal? Thank you!