| light-day | 1 ly | 2 ly | 3 ly | 4 ly | 5 ly | 6 ly | 7 ly | 8 ly | 9 ly | 10 ly | 11 ly | 12 ly | 13 ly | 14 ly | 15 ly | 16 ly | 17 ly | 18 ly | 19 ly | 20 ly | 21 ly | 22 ly | 23 ly | 24 ly | 25 ly | 26 ly | 27 ly | 28 ly | 29 ly | 30 ly | 31 ly | 32 ly | 33 ly | 34 ly | 35 ly | 36 ly | 37 ly | 38 ly | 39 ly | 40 ly | 41 ly | 42 ly | 43 ly | 44 ly | 45 ly | 46 ly | 47 ly | 48 ly | 49 ly | 50 ly | 51 ly | 52 ly | 53 ly | 54 ly | 55 ly | 56 ly | 57 ly | 58 ly | 59 ly | 60 ly | 61 ly | 62 ly | 63 ly | 64 ly | 65 ly | 66 ly | 67 ly | 68 ly | 69 ly | 70 ly | 71 ly | 72 ly | 73 ly | 74 ly | 75 ly | 76 ly | 77 ly | 78 ly | 79 ly | 80 ly | 81 ly | 82 ly | 83 ly | 84 ly | 85 ly | 86 ly | 87 ly | 88 ly | 89 ly | 90 ly | 91 ly | 92 ly | 93 ly | 94 ly | 95 ly | 96 ly | 97 ly | 98 ly | 99 ly | 100 ly |
| cubit | 51 804 136 742 400 cubit | 1.036082734848 × 1014 cubit | 1.554124102272 × 1014 cubit | 2.072165469696 × 1014 cubit | 2.59020683712 × 1014 cubit | 3.108248204544 × 1014 cubit | 3.626289571968 × 1014 cubit | 4.144330939392 × 1014 cubit | 4.662372306816 × 1014 cubit | 5.18041367424 × 1014 cubit | 5.698455041664 × 1014 cubit | 6.216496409088 × 1014 cubit | 6.734537776512 × 1014 cubit | 7.252579143936 × 1014 cubit | 7.77062051136 × 1014 cubit | 8.288661878784 × 1014 cubit | 8.806703246208 × 1014 cubit | 9.324744613632 × 1014 cubit | 9.842785981056 × 1014 cubit | 1.036082734848 × 1015 cubit | 1.0878868715904 × 1015 cubit | 1.1396910083328 × 1015 cubit | 1.1914951450752 × 1015 cubit | 1.2432992818176 × 1015 cubit | 1.29510341856 × 1015 cubit | 1.3469075553024 × 1015 cubit | 1.3987116920448 × 1015 cubit | 1.4505158287872 × 1015 cubit | 1.5023199655296 × 1015 cubit | 1.554124102272 × 1015 cubit | 1.6059282390144 × 1015 cubit | 1.6577323757568 × 1015 cubit | 1.7095365124992 × 1015 cubit | 1.7613406492416 × 1015 cubit | 1.813144785984 × 1015 cubit | 1.8649489227264 × 1015 cubit | 1.9167530594688 × 1015 cubit | 1.9685571962112 × 1015 cubit | 2.0203613329536 × 1015 cubit | 2.072165469696 × 1015 cubit | 2.1239696064384 × 1015 cubit | 2.1757737431808 × 1015 cubit | 2.2275778799232 × 1015 cubit | 2.2793820166656 × 1015 cubit | 2.331186153408 × 1015 cubit | 2.3829902901504 × 1015 cubit | 2.4347944268928 × 1015 cubit | 2.4865985636352 × 1015 cubit | 2.5384027003776 × 1015 cubit | 2.59020683712 × 1015 cubit | 2.6420109738624 × 1015 cubit | 2.6938151106048 × 1015 cubit | 2.7456192473472 × 1015 cubit | 2.7974233840896 × 1015 cubit | 2.849227520832 × 1015 cubit | 2.9010316575744 × 1015 cubit | 2.9528357943168 × 1015 cubit | 3.0046399310592 × 1015 cubit | 3.0564440678016 × 1015 cubit | 3.108248204544 × 1015 cubit | 3.1600523412864 × 1015 cubit | 3.2118564780288 × 1015 cubit | 3.2636606147712 × 1015 cubit | 3.3154647515136 × 1015 cubit | 3.367268888256 × 1015 cubit | 3.4190730249984 × 1015 cubit | 3.4708771617408 × 1015 cubit | 3.5226812984832 × 1015 cubit | 3.5744854352256 × 1015 cubit | 3.626289571968 × 1015 cubit | 3.6780937087104 × 1015 cubit | 3.7298978454528 × 1015 cubit | 3.7817019821952 × 1015 cubit | 3.8335061189376 × 1015 cubit | 3.88531025568 × 1015 cubit | 3.9371143924224 × 1015 cubit | 3.9889185291648 × 1015 cubit | 4.0407226659072 × 1015 cubit | 4.0925268026496 × 1015 cubit | 4.144330939392 × 1015 cubit | 4.1961350761344 × 1015 cubit | 4.2479392128768 × 1015 cubit | 4.2997433496192 × 1015 cubit | 4.3515474863616 × 1015 cubit | 4.403351623104 × 1015 cubit | 4.4551557598464 × 1015 cubit | 4.5069598965888 × 1015 cubit | 4.5587640333312 × 1015 cubit | 4.6105681700736 × 1015 cubit | 4.662372306816 × 1015 cubit | 4.7141764435584 × 1015 cubit | 4.7659805803008 × 1015 cubit | 4.8177847170432 × 1015 cubit | 4.8695888537856 × 1015 cubit | 4.921392990528 × 1015 cubit | 4.9731971272704 × 1015 cubit | 5.0250012640128 × 1015 cubit | 5.0768054007552 × 1015 cubit | 5.1286095374976 × 1015 cubit | 5.18041367424 × 1015 cubit |
The light-day is a unit of length useful in astronomy, telecommunications and relativistic physics. It is defined as the distance that light travels in free space in oneday, and is equal to exactly 2.59020683712×1013 metres.
| 1 light-days ≈ 51804136742400 cubit | 4 light-days ≈ 2.072165469696E+14 cubit |
| 1.5 light-days ≈ 77706205113600 cubit | 4.5 light-days ≈ 2.331186153408E+14 cubit |
| 2 light-days ≈ 1.036082734848E+14 cubit | 5 light-days ≈ 2.59020683712E+14 cubit |
| 2.5 light-days ≈ 1.29510341856E+14 cubit | 5.5 light-days ≈ 2.849227520832E+14 cubit |
| 3 light-days ≈ 1.554124102272E+14 cubit | 6 light-days ≈ 3.108248204544E+14 cubit |
The cubit is an ancient unit based on the forearm length from the tip of the middle finger to the bottom of the elbow. Cubits of various lengths were employed in many parts of the world in antiquity, during the Middle Ages and as recently as Early Modern Times. The term is still used in hedge laying, the length of the forearm being frequently used to determine the interval between stakes placed within the hedge.
| 1 cubit ≈ 1.9303477731375E-14 light-days | 4 cubit ≈ 7.7213910925498E-14 light-days |
| 1.5 cubit ≈ 2.8955216597062E-14 light-days | 4.5 cubit ≈ 8.6865649791185E-14 light-days |
| 2 cubit ≈ 3.8606955462749E-14 light-days | 5 cubit ≈ 9.6517388656873E-14 light-days |
| 2.5 cubit ≈ 4.8258694328436E-14 light-days | 5.5 cubit ≈ 1.0616912752256E-13 light-days |
| 3 cubit ≈ 5.7910433194124E-14 light-days | 6 cubit ≈ 1.1582086638825E-13 light-days |
| 1 light-days ≈ 51 804 136 742 400 cubit |
| 1 cubit ≈ 1.9303477731375 × 10-14 light-days |