Question

around, about, approx, circa

can we use all of them to talk about time, date, amount, etc. ? are there any rules?

fx.

I will come to you around 5p.m.

I will come to you about 5p.m.

I will come to you approx 5p.m.

I will come to you ca. 5p.m.

Answer 1

Nobody uses the word circa anymore it is not common.

To make these sentences sound more natural use the word "at" before Read these sentences out loud and see what kind of difference it makes.

I will come to you at around 5p.m.

I will come to you at about 5p.m.

I will come to you at approx 5p.m.