So when would my car actually have been made?

[John Dayhuff]

I have a 1930 Phaeton which according to the Model A motor production charts the motor was made on Feb 15th, 1929. But I'm sure the car was not made on that day (seems awfully early in the 1929 year for a 1930 model?), is there any other information out there about when it would have actually went down the production line?

Thanks,