One question about InFlightInfo

I’m using InFlightInfo to get the current position information for an enroute flight. It returns a departureTime and a firstPositionTime. My question is what’s the relationship between those two times. Is it possible that the firstPositionTime is earlier than the departureTime for a regular case?

Most likely the other way around, departureTime can be before firstPositionTime. firstPositionTime will be set by the first ‘position’ event that is seen while departureTime can be triggered from a departure message we receive from a feed. So I wouldn’t ever expect the firstPositionTime to be before the departureTime.