Every 2000 years, significant astronomical and cultural shifts can occur. For example, the precession of the equinoxes leads to changes in the position of the stars and constellations, affecting calendars and astrological beliefs. Additionally, major historical milestones, such as the transition from the Roman Empire to the Middle Ages or shifts in religious paradigms, have often been marked around these timeframes. However, no specific event occurs universally every 2000 years; the significance often depends on cultural and historical context.
A triennial event happens every three years.
Something that happens every six years is sexennial.
I believe that the constitution states that one is to be done every 10 years.
Something that happens every three years is a triennialevent.
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.
the world cup ( I think) happens every 3 years or 4 years?
It happens every 200 years.
the Olympics
The Olympics.
Something that happens every 5 years