How many light-day in 1 Gm? The answer is 3.8606955462749E-5. We assume you are converting between light day and gigametre. You can view more details on each measurement unit: light-day or Gm The SI base unit for length is the metre. 1 metre is equal to 3.8606955462749E-14 light-day, or 1.0E-9 Gm. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between light days and gigameters. Type in your own numbers in the form to convert the units!
1 light-day to Gm = 25902.06837 Gm
2 light-day to Gm = 51804.13674 Gm
3 light-day to Gm = 77706.20511 Gm
4 light-day to Gm = 103608.27348 Gm
5 light-day to Gm = 129510.34186 Gm
6 light-day to Gm = 155412.41023 Gm
7 light-day to Gm = 181314.4786 Gm
8 light-day to Gm = 207216.54697 Gm
9 light-day to Gm = 233118.61534 Gm
10 light-day to Gm = 259020.68371 Gm
You can do the reverse unit conversion from Gm to light-day, or enter any two units below:
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.
A gigametre (American spelling: gigameter, symbol: Gm) is a unit of length equal to 10^9 metres. Its customary equivalent is 621,371 miles.
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