Clearblue Advanced Ovulation test Peak fertility

Caroline • TTC #2! Have a beautiful daughter born 7/7/12. Been married since 2010 and with my hubby since 2007.
I've been using the CB Advanced digital test (w low/high/peak fertility) for the first time this month and I'm also using Glow for the first month/cycle. My question now is, when I get the Peak-symbol (a solid smiley) it will stay showing for 48 hrs. So do Glow want me to log Peak for 1, 2 or 3 days?
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