1.   The pun fits all sorts of natural and unnatural phenomena, from lunar cycles to a nostalgic yearning to see Elvis again.

2.   Based on the lunar cycle for the year in which you were born, can you find your animal symbol?

3.   Because of the lunar cycle, some years Ramadan falls during the summer, which can be terribly hot in many parts of the world.

4.   But unlike months in the Western calendar, Islamic months do not have a fixed number of days, because they are determined by the lunar cycle.

5.   Most early calendars, for instance, were based on lunar cycles that governed planting and harvesting of crops.

6.   Must be some sort of lunar cycle.

7.   Some sea urchins in Japan have a spawning cycle that is tightly synchronized to lunar cycles and the amount of moonlight that penetrates the water, Vacquier says.

8.   The fish follow a bizarre lunar cycle of spawning that this year happens to fall on the salmon-season opener.

9.   The link between lunar cycles and Earth temperatures may help explain earlier research that drew connections between lunar cycles and rainstorms in some areas.

10.   The time of year it occurs changes annually because the Islamic calendar is based on the lunar cycles.