The term lightyear(s) has nothing to do with time. It is used as an unit to express astronomical distances, hence is more related to distances. 1 light year is the equivalent in distance to what light would travel in a year at the rate of approximately 186000 miles per second.
1,000,000,000 light-years (one billion light-years) are in one Gly
3.26 light years equals 3.08413226 × 10^13 kilometers.
440 light years = 2.58653992 × 1015 miles
10 10ths is 1 - whether it is miles, milometres, micrometres or lightyears, or pounds, or people or anything.
1 decade = 10 years
It is approx 0.000015 light years.
3 light years is equivalent to about 28 trillion kilometers. It takes light 1 year to travel a distance of 1 light year.
1,000,000,000 light-years (one billion light-years) are in one Gly
Estimated at about 2.5 million light-years.
3.26 light years equals 3.08413226 × 10^13 kilometers.
440 light years = 2.58653992 × 1015 miles
Betelgeuse is approximately 642.5 light years away from Earth.
8 light years = 75685843780650 kilometers
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.
1 billion square lightyears
Depending entirely on the boundaries of the Solar System, it has been estimated to be a bout 2 light years.
A light-year is a measurement of distance - not time. Therefore - there is no answer to your question.