Can I get Today's historic OHLC data in the Historic API package?
Let's assume today is the 11th of July and time is 2 PM, At 2 PM will I be able to get 11th of July -10 AM's 30 minute OHLC data via the historic package? or should I get the interactive package to get this data?
Yes, you will be able to get all the intervals as soon as that interval is passed i.e at max you can get OHLC for the last passed minute during trading hrs.
The Interactive package will give you per second update plus various other parameters like last Bid/Ask values.If you want to capitalize on second by second price movement than you should prefer going for the Interactive package.