I get a good chuckle out of distances from the airport, as without a time they can be meaningless.

"Talladega traffic, Cardinal XYZ is ten miles west, landing on 22, entering the downwind across the airport, Talledega" is a correct call, but unless one knows what a Cardinal is, the "when" of his arrival is a mystery.

Throw in experimentals and it's hilarity.

"Talledega traffic, Nieuport 2GV is ten miles west, landing on 22, entering the downwind across the airport, Talledega" has often been met with a "Nieuport, what is your location" five minutes later, as someone is wondering if they can safely take off.

The Cardinal would probably say "turning base to final" about that time. Me, I'm still five miles out. Or maybe seven, putt putting along at 55 mph.

The whole purpose of calling out location and intentions to the traffic is to aid in "seek and avoid," so it's a good idea to know approximate time one will travel ten miles.

Plus, when one is in the air it's an approximation. If one calls at ten miles, by the time it's heard and understood one is closer than that.