What "monday", "the 15th" and "9 o'clock" have in common is that they repeat over and over. Every week has a monday, every month has a 15th and every day has a 9 o'clock. Is there a word for such a phenomenon?

I'm a programmer trying to document a feature of the syntax used to enter these types of things. A specific word would be really useful as I keep having to explain the concept every time I mention it.

So if a specific and unique point in time could be signified by "date" or "datetime" then what would I call these specific but reoccurring points in time?

  • Could you construct an example sentence showing how you would hope to use this word? Commented Feb 14, 2019 at 6:27

2 Answers 2


You could try

Recurrent - returning or happening time after time


Periodic - occurring or recurring at regular intervals

In a programming context, I'd favor "periodic".

  • I like periodic
    – user81993
    Commented Feb 14, 2019 at 6:23

There are 2 parts to this. First is the "start time." Second is the recurrence interval. Is that correct?

For #1, I consider words like: Date-Time-Group (DTG), Epoch, Start, Instantiation
For #2, I'd consider: Frequency, Interval, Repetition Interval, Rate, Repetitiveness

  • Na its all one question. There is no start time, if something happens on monday it is on every monday that has ever been and ever will be.
    – user81993
    Commented Feb 14, 2019 at 6:03

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