positive OPK result after ovulation

I got positive opk results for 2 days in a row and I know I ovulated yesterday (based on my cycle and my CM) today again I received a positive result. I'm confused now. I know that ovulation occurs around 24 to 36 hours after LH surge, so if I ovulated yesterday (I got a positive result on ovulation day as well), then I shouldn't have received a positive opk today (day after ovulation)