When did I ovulate?

Nicole
Hi ladies,
Can you please help with my tests. Top one was yesterday cd 17 late afternoon and bottom one was this morning cd 18. Both look similar to me?
I did the clearblue digital one yesterday afternoon and this morning but both were low, going to do clearblue this afternoon as well as last month it was low in morning and the peak in afternoon! I've ovulated on cd 18 for last 4 months so think it's today?
Thanks