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 |
spat | 25.9020684 S | 51.8041367 S | 77.7062051 S | 103.6082735 S | 129.5103419 S | 155.4124102 S | 181.3144786 S | 207.2165470 S | 233.1186153 S | 259.0206837 S | 284.9227521 S | 310.8248205 S | 336.7268888 S | 362.6289572 S | 388.5310256 S | 414.4330939 S | 440.3351623 S | 466.2372307 S | 492.1392991 S | 518.0413674 S | 543.9434358 S | 569.8455042 S | 595.7475725 S | 621.6496409 S | 647.5517093 S | 673.4537777 S | 699.3558460 S | 725.2579144 S | 751.1599828 S | 777.0620511 S | 802.9641195 S | 828.8661879 S | 854.7682562 S | 880.6703246 S | 906.5723930 S | 932.4744614 S | 958.3765297 S | 984.2785981 S | 1,010.1806665 S | 1,036.0827348 S | 1,061.9848032 S | 1,087.8868716 S | 1,113.7889400 S | 1,139.6910083 S | 1,165.5930767 S | 1,191.4951451 S | 1,217.3972134 S | 1,243.2992818 S | 1,269.2013502 S | 1,295.1034186 S | 1,321.0054869 S | 1,346.9075553 S | 1,372.8096237 S | 1,398.7116920 S | 1,424.6137604 S | 1,450.5158288 S | 1,476.4178972 S | 1,502.3199655 S | 1,528.2220339 S | 1,554.1241023 S | 1,580.0261706 S | 1,605.9282390 S | 1,631.8303074 S | 1,657.7323758 S | 1,683.6344441 S | 1,709.5365125 S | 1,735.4385809 S | 1,761.3406492 S | 1,787.2427176 S | 1,813.1447860 S | 1,839.0468544 S | 1,864.9489227 S | 1,890.8509911 S | 1,916.7530595 S | 1,942.6551278 S | 1,968.5571962 S | 1,994.4592646 S | 2,020.3613330 S | 2,046.2634013 S | 2,072.1654697 S | 2,098.0675381 S | 2,123.9696064 S | 2,149.8716748 S | 2,175.7737432 S | 2,201.6758116 S | 2,227.5778799 S | 2,253.4799483 S | 2,279.3820167 S | 2,305.2840850 S | 2,331.1861534 S | 2,357.0882218 S | 2,382.9902902 S | 2,408.8923585 S | 2,434.7944269 S | 2,460.6964953 S | 2,486.5985636 S | 2,512.5006320 S | 2,538.4027004 S | 2,564.3047687 S | 2,590.2068371 S |
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 ≡ 25.9020683712 spats | 4 light-days ≡ 103.6082734848 spats |
1.5 light-days ≡ 38.8531025568 spats | 4.5 light-days ≡ 116.5593076704 spats |
2 light-days ≡ 51.8041367424 spats | 5 light-days ≡ 129.510341856 spats |
2.5 light-days ≡ 64.755170928 spats | 5.5 light-days ≡ 142.4613760416 spats |
3 light-days ≡ 77.7062051136 spats | 6 light-days ≡ 155.4124102272 spats |
The spat (symbol S) is also an obsolete unit of distance used in astronomy. It is equal to 1000000000 kilometres (1 Tm or 1012 m). It is about 6.6846 astronomical units (AU), 1.057×10−4 light-years or3.240×10−5 parsecs.
1 spats ≡ 0.038606955462749 light-days | 4 spats ≡ 0.154427821851 light-days |
1.5 spats ≡ 0.057910433194124 light-days | 4.5 spats ≡ 0.17373129958237 light-days |
2 spats ≡ 0.077213910925498 light-days | 5 spats ≡ 0.19303477731375 light-days |
2.5 spats ≡ 0.096517388656873 light-days | 5.5 spats ≡ 0.21233825504512 light-days |
3 spats ≡ 0.11582086638825 light-days | 6 spats ≡ 0.23164173277649 light-days |
1 light-days ≡ 25.9020684 spats |
1 spats ≡ 0.0386070 light-days |