Full name: light day
Plural form: light days
Alternate spelling: lightday
Category type: length
Scale factor: 25902068371200
The SI base unit for length is the metre.
1 metre is equal to 3.8606955462749E-14 light day.
Valid units must be of the length type.
You can use this form to select from known units:
A light day (also written light-day) is a unit of length. It is defined as the distance light travels in an absolute vacuum in one day (of 86,400 seconds) or 25,902,068,371,200 metres (~26 Tm).
Note that this value is exact, since the metre is actually defined in terms of the speed of light. The light day isn't very frequently used at all since there are few astronomical objects or distances of that magnitude; the Oort cloud, for example, is thought to extend between 290 and 580 light-days out from the Sun.
light day to braza [Spain]
light day to douzième [watchmaking]
light day to palmo [Texas]
light day to wah [Thailand]
light day to furlong [survey]
light day to point [TeX]
light day to vara [Portuguese]
light day to douzième [print]
light day to elle [Vienna]
light day to stadion