How long for Weldon 40 to cure?

[hrdneglcry]

So I have used this before to brace a crack on top of a tank with a piece of acrylic. It took a few days for it to completely cure. Now I just glued a small 2"x2" piece of acrylic onto a lid for extra support. About how long will it take before it starts to get solid?

 

[hrdneglcry]

Nevermind. I found it on the jar. 72 hrs 80% strength. 2 hours fixture time.