lmin

light-minute

Lengthexact by definition

A light-minute is the distance light travels in vacuum in one minute, exactly 17,987,547,480 metres, about 0.12 astronomical units. The sun is 8.3 light-minutes from Earth, so sunlight leaving the photosphere now arrives after breakfast is over.

Watch out: A light-minute is not a minute of anything angular. It is a distance, like the light-year, and the "light" is doing the work of "the distance covered in".

1 lmin 17,987,547,000 m