You are meeting someone at 7pm. 7pm comes around and they haven't arrived. How long do you wait before phoning them to see where they are?
I wouldn't phone until at least quarter past, but my dad and at least one of my other friends would be on the blower at 7.02.
I wouldn't ring, I would text at quarter past, if I didn't get a reply I would assume they weren't coming.
If I was meeting BK i would ring at 6.30 to make sure he was on his way.
And you would find me there waiting!
I'm used to it now. Mind you, we daren't be late for one oftheir events. They DO get on the phone after about two minutes!
That's the sort of thing that annoys me. I have one friend who is never on time and I actually allow for it now - I never arrive at the appointed time as I know I'll be sat there alone for at least half an hour. But of course, on the three or so occasions in the six years I've known him he has arrived before me, he's been on the phone demanding to know why I'm late!