Convert Light Hours to Light Days
Convert Light Hours (lh) to Light Days (ld) instantly and accurately.
Conversion Formula
ld = lh × 0.04166666667
About Light Hours
A light hour (lh) is the distance light travels in one hour through a vacuum, approximately 1.08 billion kilometers. Jupiter is about 0.72 light hours from the Sun, while Saturn orbits at roughly 1.3 light hours. This unit is useful for expressing distances to the outer planets and understanding communication delays with spacecraft. A radio signal to a probe near Jupiter takes about 43 minutes to arrive, representing the vast scales even within our solar system. Pluto at its farthest reaches about 5.5 light hours from the Sun.
About Light Days
A light day (ld) is the distance light travels in one day through a vacuum, equal to approximately 25.9 billion kilometers. This unit bridges the gap between planetary distances and interstellar space. The Voyager 1 spacecraft, humanity's most distant object, is currently over 0.9 light days from Earth. The outer edge of our solar system (heliopause) is roughly 0.6-0.7 light days away. The Oort Cloud, a theoretical sphere of icy objects surrounding our solar system, extends from about 0.16 light days to possibly 1.6 light years.
Quick Reference Table
| Light Hours (lh) | Light Days (ld) |
|---|---|
| 1 lh | 0.0416667 ld |
| 2 lh | 0.0833333 ld |
| 5 lh | 0.208333 ld |
| 10 lh | 0.416667 ld |
| 25 lh | 1.04167 ld |
| 50 lh | 2.08333 ld |
| 100 lh | 4.16667 ld |