First time using OPKs

1st photo - 12:35pm yesterday

2nd photo - 9:18pm

Does anyone think I might get a bit darker tomorrow or do you think I’ve hit the window? I’ve only tested for two days so not sure what it was previous to that

(I ordered tests online, took ages to come, my periods are out of whack, I thought I’d ovulated already. Took one as practice, turns out I’m ovulating. I tried a clear blue and that was positive as well)