1 or 2 DPO?

Lauren • 💜Elly Grace•5/14/13• 💜Vivian Kate•3/26/18•
So Friday I got my solid smiley on the clear blue advanced digital which means I hit my peak. Yesterday I tested with just the regular clear blue ovulation tests and got a smiley as well. I'm not sure when I should start counting my DPO. The initial day I got my smiley, or the 2nd day? (This is my first month TTC and checking ovulation which is why I'm asking) TIA!