[lucb1e]

But why not make it a sliding scale, where you can pick the past 17.3 minutes if you wish to do so?

[iLoch]

Might be because it requires more complex database querying and/or is less cacheable.

[milcron]

Still... I'm unhappy with the current selection of offerings.

Reddit lets you see the top posts from the past: hour, day, week, month, year, all time.

Going from one month to a whole year is a huge jump! And personally I almost never look at top posts from the past hour.

I would love to see top posts from the past 3-months and 6-months.

[nsrivast]

Intuitively it seems like you could approximate by weighting/combining 15min and 30min caches. But also seems like a very esoteric problem!