Simple Question about AG Recipe Addition Times

[mrburnsbud]

I think I understand whats goin on here....is the time....how much time is left in the boil

Hop #1 @ 60 min
Hop #2 @ 20 min
Irish Moss @ 5 min

I notice a majority of the recipes use this format, is this the standard?
:fro:

 

[Bobby_M]

Yup, left in the boil. Why? Because overall boil times will vary from brewer to brewer. Example, if you label hop additions in the other direction like bittering at 0 minutes, what if I boil for 90 minutes and you boil for 60? I'd boil those bittering hops for 30 minutes longer than you would.