Ovulation

Hi 

I took the clearblue ovulation test which shows the 2 most fertile days. On CD 13( Wednesday i.e August 30 2023)  it showed low fertility when checked at 7.45 a.m and I checked again at around 2.30 p.m on the same day and got my peak. My husband was at work and he wasn't feeling well so we managed to DTD only on  Friday around 12.30 P.M. 

I want to know did we manage to do it within the 48 hours time? And also I want to know from when does the 48 hours start? Is it from the time it shows us peak on the test? Or the entire day before that comes under the 48 hours?