## ››Convert polegada [Portuguese] to light day

We assume you are converting between polegada [Portuguese] and light day.
You can view more details on each measurement unit:
The SI base unit for length is the metre.
1 metre is equal to 39.370078740157 polegada, or 3.8606955462749E-14 light-day.
Note that rounding errors may occur, so always check the results.
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You can do the reverse unit conversion from light-day to polegada, or enter any two units below:

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## ››Common length conversions

A polegada tem sua origem na medida realizada com o próprio polegar humano (não todo ele, mas a distância entre a dobra do polegar e a ponta). Uma medida rápida do polegar de um ser humano adulto fornece aproximadamente 2,5 cm de comprimento para esta distância.

Hoje em dia, ela é definida em função da Jarda. Esta por sua vez é definida em função do metro (unidade adotada na maioria dos países).

## ››Definition: Light-day

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.

## ››Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!