When is the best time of day to take an ovulation test?

I bought an at-home 20 day ovulation test that I am going to start after this period ends. It says on the package that you should not perform the test less than 2 hours after drinking a lot of liquid, presumably because it will dilute your urine. It doesn't specify when in the day to take it, though. Does anyone know when the best time of day to take the test is? Thanks!