[TruffleLabs]

What is your desired definition of "best"?

Most readers on initial posting?

Quality comments?

Quantity traffic on shown website?

[BenderV]

Here, the best time is defined as the highest chance of getting "some" visibility. Most posts quickly fade away.

You are right that there is lots of way to measure this but quality comments is way harder to judge and we don't have quantity traffic info.