And as far as I can tell they only start counting at about 10.am uk time.
It seems like its 10 am to 10 am.
It might be that even when they refresh at about 10 am the data is still 3 hours or so old.
Their refresh rate is very unpredictable but you can usually log in every couple of hours for new data.
On a bad day when they are being hacked then it is not updated until the evening when they've sorted out all the bandits.
-aqls-