In Engpsh, the afternoon is the time of day that comes after the morning and before the evening. It is typically considered to be the time between noon and 6:00 pm. You can refer to the afternoon as "the afternoon," or you can use specific terms to describe specific times within the afternoon, such as "mid-afternoon" (around 3:00 pm) or "late afternoon" (around 5:00 pm). For example:
"I have a meeting at 2:00 pm this afternoon."
"I usually take a break in the mid-afternoon to get some fresh air."
"I'll be finishing up my work in the late afternoon and then heading home."