Data Flow refreshes every hour. The format to query using a hourly format is the following: YYYY-MM-DDTHH
When you click on “Copy the URL”, do not forget to specify a time at which you’d like to extract the data so that it functions properly.
Data is only available for complete hour timeframes. We are currently subject to 3 to 5 minute delays for real time data. We therefore recommend waiting 10 minutes before requesting data from the previous hour in order to reduce the occurrence of the "Data Not Ready" error.