How close were you. The results may contain very small precision errors but these wont usually overly affect the results see below for an explanation. But when applying this formula to the speeds 09c and 099c the time of traveling at 099c is much higher.
Using the caesium definition of a second.
Traveling at 186000 miles a second 300000 kmsec a light beam covers 6 trillion miles 97 trillion km over the. The triangles will help you remember these three rules. D x 1 tan a 1 tan v d x 1 tan a 1 tan v. Since the wavelength is the distance between two crests.