Change.
Yes it happens every year in Canada on the 1st of July.
It is a triennial event. A triennial event happens three times a year.
A triennial event happens every three years.
Something that happens every six years is sexennial.
yes i'm positive it happens every year
bidecadal
nothing
I think you are asking about a census.
Semicentennial
The cast of It Happens Every Day - 1919 includes: Adolf Philipp
Every fourth day refers to a specific pattern of time intervals where an event or occurrence takes place every four days. For example, if an event happens on a Monday, it would also occur on the following Thursday, then the next Sunday, and so on, continuing this cycle. This pattern can be used for scheduling activities or tracking events over time.
An event that happens every other year is called a "biennial" event. This term is derived from the Latin "biennium," meaning "two years." Such events can include things like festivals, conferences, or exhibitions that occur once every two years.