Word for groups of periods of time

I am looking for a word which would apply to the groupings of periods of time, for example:

Daily, Weekly, Bi-Weekly, Monthly, Annually etc

For example, "this task happens daily" where daily is ... the periodicity?

Solution 1:

You may use frequency:

• The number of complete cycles of a periodic process occurring per unit time.(AHD)

• daily frequency, monthly frequency etc.

Solution 2:

I recently started seeing 'cadence' used for this meaning.

noun, Also, cadency

3 - the beat, rate, or measure of any rhythmic movement: The chorus line danced in rapid cadence.

www.dictionary.com

For example "The cadence of that meeting is fortnightly"...

But I only saw this for the first time a year or so ago, and not often since (though subjectively more and more as time goes on)