Unit light-day
Name
Category Length
Details In the field of length, a unit light-day refers to the distance traveled by light in a vacuum over a period of one day. It is commonly used in astronomy to express large distances between celestial objects. Since the speed of light in a vacuum is approximately 299,792 kilometers per second (km/s), a light-day can be calculated by multiplying the speed of light by the number of seconds in a day.

A light-day is equal to:

299,792 km/s * 24 hours/day * 3600 seconds/hour ≈ 25,902,068,371 km

So, a unit light-day is approximately 25.9 billion kilometers, which is roughly 16.1 billion miles. This unit is useful when describing distances within our solar system or to nearby stars but is too small for measuring distances between galaxies or on the scale of the entire universe, where light years or parsecs are more commonly used.
light-day to Å(ångström)light-day to aly [Julian](attolight-year)light-day to am(attometre)light-day to apc(attoparsec)light-day to au(astronomical unit)light-day to ch [Gunter's](chain)light-day to cly [Julian](centilight-year)light-day to cm(centimetre)light-day to cpc(centiparsec)light-day to daly [Julian](decalight-year)light-day to dam(decametre)light-day to dapc(decaparsec)light-day to dly [Julian](decilight-year)light-day to dm(decimetre)light-day to dpc(deciparsec)light-day to Ely [Julian](exalight-year)light-day to Em(exametre)light-day to Epc(exaparsec)light-day to fly [Julian](femtolight-year)light-day to fm(fathom)light-day to fm(femtometre)light-day to fm(fermi)light-day to fpc(femtoparsec)light-day to ft(foot)light-day to ft [US Survey](foot)light-day to fur(furlong)light-day to Gly [Julian](gigalight-year)light-day to Gm(gigametre)light-day to Gpc(gigaparsec)light-day to hh(hand)light-day to hly [Julian](hectolight-year)light-day to hm(hectometre)light-day to hpc(hectoparsec)light-day to in(inch)light-day to kly [Julian](kilolight-year)light-day to km(kilometre)light-day to kpc(kiloparsec)light-day to lea [land](league)light-day to li [Gunter's](link)light-day to light-hourlight-day to light-minutelight-day to light-secondlight-day to ly [Julian](light-year)light-day to m(metre)light-day to mi(mile)light-day to millight-day to Mly [Julian](megalight-year)light-day to mly [Julian](millilight-year)light-day to Mm(megametre)light-day to mm(millimetre)light-day to Mpc(megaparsec)light-day to mpc(milliparsec)light-day to nl(nautical league)light-day to nly [Julian](nanolight-year)light-day to nm(nanometre)light-day to nmi(nautical mile)light-day to npc(nanoparsec)light-day to pc(parsec)light-day to pica [PostScript]light-day to Ply [Julian](petalight-year)light-day to ply [Julian](picolight-year)light-day to Pm(petametre)light-day to pm(picometre)light-day to polelight-day to Ppc(petaparsec)light-day to ppc(picoparsec)light-day to pt [PostScript](point)light-day to rd(rod)light-day to thoulight-day to Tly [Julian](teralight-year)light-day to Tm(terametre)light-day to Tpc(teraparsec)light-day to yd(yard)light-day to yly [Julian](yoctolight-year)light-day to Yly [Julian](yottalight-year)light-day to ym(yoctometre)light-day to Ym(yottametre)light-day to ypc(yoctoparsec)light-day to Ypc(yottaparsec)light-day to zly [Julian](zeptolight-year)light-day to Zly [Julian](zettalight-year)light-day to zm(zeptometre)light-day to Zm(zettametre)light-day to zpc(zeptoparsec)light-day to Zpc(zettaparsec)light-day to µ(micron)light-day to µin(microinch)light-day to µly [Julian](microlight-year)light-day to µm(micrometre)light-day to µpc(microparsec)
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