| Did you mean to convert | millimil millimil [Sweden] |
to | light-day |
How many millimil in 1 light-day? The answer is 1.0197664713071E+21. We assume you are converting between millimil and light day. You can view more details on each measurement unit: millimil or light-day The SI base unit for length is the metre. 1 metre is equal to 39370078.740157 millimil, or 3.8606955462749E-14 light-day. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between millimils and light days. Type in your own numbers in the form to convert the units!
You can do the reverse unit conversion from light-day to millimil, or enter any two units below:
The SI prefix "milli" represents a factor of 10-3, or in exponential notation, 1E-3.
So 1 millimil = 10-3 mils.
The definition of a mil is as follows:
A milliradian, often called a mil or mrad, is an SI derived unit for angular measurement which is defined as a thousandth of a radian (0.001 radian).
Compass use of mils typically rounds 6283 to 6400 for simplification, but here we use the official definition.
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.
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