Calling all Clearblue Advanced OPK users!!!!

Hi! LoL ok, so I'm following the instructions listed in kit, yesterday I got a flashing smiley face (High) not peak, but high. The CBA opk states that once a HIGH or a flashing smiley face is displayed, the user can start testing more than once day.

So my question is, I want to test 2 times a day, first time with fmu, but when should I test the second time? Noon? Evening?

Thanks in advance! šŸ˜˜