時間の換算

\(\normalsize Time\ conversion\\ (1)\ Plank\ time:\hspace{10px} 1t_p=5.39116*10^{-44}s\\ (2)\ atomic\ unit:\ 1au=2.418884326*10^{-17}s\\ (3)\ 1h=60min=3600s\\\hspace{25px} 1s=10^3ms=10^6\mu s=10^9ns\\ (4)\ Calendar:\hspace{15px} 1month=30day\\\hspace{115px} 1week=7day\\\hspace{115px} 1year=365day\\ (5)\ Gregorian:\ 1year=365.2425day\\ (6)\ Julian:\hspace{38px} 1year=365.25day\\ (7)\ sidereal:\hspace{24px} 1year=365.256363day\\ (8)\ 1century=100year\\ \)