How many light-day in 1 megametres? The answer is 3.8606955462749E-8. We assume you are converting between light day and megametre. You can view more details on each measurement unit: light-day or megametres The SI base unit for length is the metre. 1 metre is equal to 3.8606955462749E-14 light-day, or 1.0E-6 megametres. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between light days and megameters. Type in your own numbers in the form to convert the units!
1 light-day to megametres = 25902068.3712 megametres
2 light-day to megametres = 51804136.7424 megametres
3 light-day to megametres = 77706205.1136 megametres
4 light-day to megametres = 103608273.4848 megametres
5 light-day to megametres = 129510341.856 megametres
6 light-day to megametres = 155412410.2272 megametres
7 light-day to megametres = 181314478.5984 megametres
8 light-day to megametres = 207216546.9696 megametres
9 light-day to megametres = 233118615.3408 megametres
10 light-day to megametres = 259020683.712 megametres
You can do the reverse unit conversion from megametres 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 megametre (American spelling: megameter, symbol: Mm) is a unit of length equal to 10^6 metres (from the Greek words megas = big and metro = count/measure). Its customary equivalent is 621.37 miles.
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