Thanks for this rule of thumb.

I must say, that for me it does not seem to fit.
My experience from my last several stakes, has been that it takes 2-4 times as much time as this formula says it should.

And that's with diff in general below 1, and with a staking wallet on 24/7.

I know there's a degree of randomness to staking, so I could have been unlucky. I probably was :)

But still its nice to see a simple straight forward formula, and I hope that it proves to be more precise for me in the future :)