Some adverbs tell us how often something is done. These include; always, constantly, continually, frequently, infrequently, intermittently, normally, occasionally, often, periodically, rarely, regularly, seldom, sometimes, . . .

For example:

I always do my homework on time. - In this sentence always shows us the frequency.
She goes out occasionally. - In this sentence occasionally shows us the frequency.

When something happens regularly at a fixed time we can use the following as adverbs:-

For example:

I get a newspaper every day. = I get the newspaper daily.
I pay my rent every month. = I pay my rent monthly.