It's "in the afternoon".
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
It's in the afternoon. Also you can use 'Them' instead of repeated 'Grandparents'. Thanks
To say “at afternoon” is not grammatically correct because we are using the preposition in its place form. However, this is what confuses many English learners because we can say,
Afternoon – Anywhere from 12:00 pm to lat