There are questions about American relative immigrant visa and F4 compatriot visa. See the detailed questions.

Tell you how to calculate. Subtract the date of approval from the date of receipt to get a number. In your example, August 2009-February 2003 = June 6. At present, F4 has been scheduled to be submitted on June 1 2002, and your aunt's application was submitted in 2003. Under normal circumstances, it takes more than a year. When the waiting time ends, the sign is that your father will receive a 13-digit case number starting with GUZ. At that time, your age will be subtracted from the above 6 years in June, if it does not exceed 2 1 year. Then you can follow your parents and get a green card at the same time. Not over 2 1 year.

At your present age, 22 years and 6 months, it is no problem to be ranked in five years.