To make life a little easier I decided to cobble together an HTML scraper to automate the checking process.
Figure 1. Screenshot
According to the CertManager Test History page "tests are imported during regular business hours (GMT -07:00)".
Adding your own service listener should be a pretty straightforward task: simply implement PropertyChangeListener and register with the service. As an example; if you live in a timezone other than GMT -07:00, and want to get notified ASAP, you could implement a listener to send an email, or SMS, once the specified test result has been found.