fractions of a secondmetric name
0,000 000 000 000 000 000 000 001yoctosecond [ ys ]
0,000 000 000 000 000 000 001zeptosecond [ zs ]
0,000 000 000 000 000 001attosecond [ as ]
0,000 000 000 000 001femtosecond [ fs ]
0,000 000 000 001 [ trillionth ]picosecond [ ps ]
0,000 000 001 [ billionth ]nanosecond [ ns ]
0,000 001 [ millionth ]microsecond [ _µ_s ]
0,001 [ thousandth ]millisecond [ ms ]
0.01 [ hundredth ]centisecond [ cs ]
1.0second [ s ]

秒到年

seconds to years
60 seconds= 1 minute [ mean solar ]
59.83617 seconds= 1 minute [ sidereal ]
60 minutes= 1 hour
24 hours= 1 day
3,600 seconds= 1 hour
86,400 seconds= 1 day [ mean solar ]
86,164.09 seconds= 1 day [ sidereal ]
7 days= 1 week
168 hours= 1 week
14 days= 1 fortnight
28, 29, 30 or 31 days= 1 month
365 days= 1 year
366 days= 1 leap year
12 months= 1 year
31,536,000 seconds= 1 year [ calendar ]
31,558,150 seconds= 1 year [ sidereal ]
31,556,930 seconds= 1 year [ tropical ]
9,460,550,000,000,000 metres= 1 light year
299,792,458 metres per second ( m/s )= speed of light
parsec= approx. 3.25 light years

周年纪念日

year intervals - anniversariesnumber of years
Biennial2
Triennial3
Quadrennial4
Quinquennial5
Hexennial *6
Septennial7
Octennial8
Novennial9
Decennial10
Hendecennial *11
Duodecennial12
Tredecennial *13
Quindecennial15
Sextodecennial *16
Septendecennial17
Vigintennial *20
Trigentennial *30
Quadragennial40
Quinquagenary50
Sexagennial *60
Septuagennial *70
Septuagesiquintennial *75
Octogintennial *80
Nonagintennial *90
Centennial100
Quasquicentennial125
Sesquicentennial150
Terquasquicentennial or Septaquintaquinquecentennial *175
Bicentennial200
Quasquibicentennial *225
Semiquincentennial *250
Tercentennial300
Semiseptcentennial *350
Quatercentenary400
Quincentennial500
Sexcentennial *600
Septcentennial *700
Octocentennial800
Millenial1,000
Quindecimillenial15,000

References

最后修改:2024 年 12 月 13 日
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