Chief cells ( stomuch) secreate pepsinogen , a inactivae enzyme. And in small intestine it converted into pepsin ,active form. Chief cell also present in parathyroid gland release pth harmone regulates level of calcium, magnesium, HPO4 ions in blood.
In the United States, afternoon is generally the time between noon and 5:00 p.m., and evening is considered anything after 5:00 p.m. There is no set allocation for afternoon and evening, however.
Well, If noon is about 12:00-1:00, And afternoon is about 1:00-4:00, I think late afternoon would be from 4:00-5:30. 5:30-8/9ish is evening, And from 9ish on it's night.