Every seventeen years, a species of cicadas known as periodical cicadas emerge from the ground in large numbers, primarily in the eastern United States. This emergence occurs in synchronized cycles, with different broods appearing in different years, but the most famous are the 17-year cicadas from Brood X. These cicadas spend most of their lives underground as nymphs before emerging as adults to mate, lay eggs, and then die shortly after, a phenomenon that creates a significant impact on local ecosystems.
A triennial event happens every three years.
Something that happens every six years is sexennial.
It means you are seventeen years younger than she is.
Something that happens every three years is a triennialevent.
Seventeen Years - film - was created in 1999-09.
The duration of Seventeen Years - film - is 1.5 hours.
Something that happens once a century.
As far as I know, nothing special happens every 100,000 years. A full precession cycle takes about 26,000 years.
Quinquennial = something that happens every 5 years. Lustral = also something that happens every 5 years or we could invent: semi-Decennial: where semi is half and Deccennial happens every 10 years.
It happens every 200 years.
the Olympics
The Olympics.