First time OPK - which day was (likely) ovu?

Rachel
opk - which day was (likely) ovu?" />

This is my first time using OPKs, and I detected an LH peak yesterday morning (cd15). I know OPKs don’t confirm ovulation, but assuming I ovulated this month, did I likely ovulate sometime during cd15, or will I today (cd16)? Or even tomorrow?

Vote below to see results!