Had 1 calm day, thought it was going to work.

Even on a dead calm day all three factors will still apply.

At least, I thought grimly, it was a calm day.

Can you beat it in a calm day on the deep sea?

These are shy animals, but there is a good chance of seeing them if you go out on a calm day.

The operation took several hours and had to wait for a calm day with no wind.

How long would they have to wait for a calm day?

"I took it out on a very calm day," he said.

The woman looked as if she had been blown about by the wind, although it was a calm day.

I learned that the horizon, as seen from a height of five feet on a calm day, was two and a half miles away.