Light-year is the distance in this case. It is the distance light travels in a year, and is equal to about 9.5 x 1012 kilometers.
Lightyears and miles
about 4 lightyears
lightyears
Lightyears. The distance between the Sun and Earth is 1.49 lightyears (149 000 000 km)
The distance is 41 parsecs (approx 134 lightyears).
about 26000 lightyears
it is 4.24 lightyears away
Lightyears
over 9000 lightyears away
You can use it with lightyears and stuff.
The stars at the two ends, Alnitak and Mintaka are at a distance of 387 and 380 parces (1262 and 1239 lightyears) respectively. Due to the relatively small angular separation, the distance between the stars is approx 7 parsecs = 23 lightyears.
A light-year is a measurement of distance - not time. Therefore - there is no answer to your question.