None. A light year is a measure of distance, not of time.
3.262 light years.
...one?
The distance of one light year, in light years, is exactly 1.
Years are a measurement of time; light years are a measurement of distance. A light year is the distance light travels in one year (in a vacuum).
One meter is about 0.000,000,000,000,000,105,7 light-years.Calculation: As a light-year is 9,460,730,472,580,800 meters, one meter equals 1/9,460,528,400,000,000 light-years = 1.057,000,834,024,615,4 × 10-16 light-years - or about 105.7 atto-light-years.
"How many light years does Dschubba have?" "How many light years does Dschubba have?"
9,460,730,472,581 kilometers in one light year.
2,100 light years = 6.51808059 × 1019 feet
Light years is a measure for distance, the distance light travels in one year. For the light to travel 587 light years, it takes 587 years.
Exactly 1.000 year.
Much less than one light year. 5 billion miles is "only" about 0.000850557142 light years.
One parsec is equivalent to 3.3 light years. 150 parsecs = 150 x 3.3 = 495 light years