we have a semiannual banquet for our club that happens every 6 months
When something happens 6 times per year, it is referred to as occurring "bi-monthly." This means the event or frequency happens every two months. It is important to note that the term "bi-monthly" can sometimes be ambiguous, as it can also mean twice a month in some contexts. To avoid confusion, it is best to specify whether it is every two months or twice a month.
Once every 12 months, once every 6 months, once every 3 months
there are 12 months in every Gregorian year.
One event that happens four times a year is the changing of the seasons. Each year, we experience spring, summer, autumn, and winter, marking distinct shifts in weather, daylight, and nature. Additionally, many companies hold quarterly earnings reports, providing updates on their financial performance every three months.
Quarter. At every Quarter of the financial year (every 3 months).
Moores law states that the number of discrete logical components on an area of silicone will double every eighteen months (his grammer is better). this means that every eighteen months the speed/capasity of a device should roughly double, giveing engineers twice as much process to play with and invent new stuff based on.
Bi-monthly means every two months. (Semi-monthly means twice a month). There may be cases where these terms are misused, so be careful.
According to the online Oxford Dictionaries, "bimonthly" can refer to something occurring every two months or twice in one month. It might be best to just say "every two months" to avoid confusion.
weekly
twice-a-day or it can be called semi-diurnal which relates to such occurrences as tides.
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Something that happens once a century.
Quarterly
A triennial event happens every three years.
Something that happens every 5 years
Annual.