It has a single moon that rotates every 30 days.

Having only 28 days in common years, it is the only month of the year that can pass without a single full moon.

The complex pattern never ceased to delight him, for he'd grown up with but a single moon.

That business of the giant single moon- She shook her head.

There was no street lighting either, and Refuge's single moon hadn't risen yet.

Not a single moon or star beside the grid, let alone a comet.

She pointed at the single moon that was still up in the sky.

The single moon had risen in de- fiance of the thunder.

Night was young over the island, Earth's single moon rising full.

He went out into the camp, as he had so many times before, under the wan light of a single moon.