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時をかけるほと / Leap Second

時をかけるほと / Leap Second

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Yuki Ishikawa

June 18, 2015
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  1. ͏Δ͏ඵͱ͸ • ੈքඪ४࣌(UTC) ͱ ੈք࣌(UT1) ͷࠩΛຒΊΔ΋ͷ • 1ඵ૿͑ͨΓݮͬͨΓ͢Δ • ࠓͷͱ͜Ζݮͬͨ͜ͱ͸ͳ͍

    • 1972೥ʙ2012೥ͷؒʹܭ25ճ࣮ࢪ • ࣮ࢪ೥ͷ 6݄30೔ ·ͨ͸ 12݄31೔ • 23࣌59෼60ඵ ͕௥Ճ͞ΕΔ • ೔ຊ࣌ؒͩͱ࣍ͷ೔ͷ 8࣌59෼60ඵ
  2. Leap Indicator • ͏Δ͏ඵ͕͍ۙ͜ͱΛ஌ΒͤΔϑϥά • ݖҖαʔόʹ LI Ϗοτ͕ઃఆ͞ΕΔͱ
 ঃʑʹԼҐ NTP

    αʔόʹਁಁ͍ͯ͘͠ • LI ϏοτΛड͚औͬͨͱ͖Ͳ͏ରԠ͢Δ͔͸
 ֤ NTP αʔόʹΑͬͯҟͳΔ