Does the date of the "super moon" depend upon your location? Where I live, the moon is 99.3% full on the 10th and 99.5% on the 11th which suggests to me that the "super moon" will be on the 11th.
I checked a local newspaper, and it does indeed say the 10th. However, I'm still confused because on the 11th the moon is lightly fuller and closer to the Earth.