Results delimited by time frames?

[Bill]

Hey folks,

I'm looking into using the API as a research tool, but I don't see a function that defines the concept of time frames. Everything seems to be a snapshot of the 'now'.

For example, I'd like to be able to track the ratings and reviews (number and resulting rating) of a title in the first 30 days of publication. Then 60, 90, 180, 365. Having this kind of data would let me see which titles were slow to be reviewed, which ones drew instant attention, the average first month rating levels by genre, etc.

But unless I'm missing something, I don't see a way to limit results to a time period. Am I missing something in the docs? Or is this something I should feature request?

[Bill]

Just bumping this for Dev visibility. Is this already a feature but I'm missing it, or should I request it as a feature enhancement?