Andrew

When you build your history request you set the start and end time. Look at https://github.com/FreeOpcUa/python-opcua/blob/master/opcua/common/node.py#L460, if you call `read_raw_history` you pass in start and end time.

Their answer seems trivial. Don't reference both direction to save XML file size? All this does is make XML parsing even more complicated and probably slower as well.