Time Conversion Table

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 [ µs ]
0,001 [ thousandth ]millisecond [ ms ]
0.01 [ hundredth ]centisecond [ cs ]
1.0second [ s ]
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
year intervals – anniversariesnumber of years
Biennial
2
Triennial
3
Quadrennial
4
Quinquennial
5
Hexennial *
6
Septennial
7
Octennial
8
Novennial
9
Decennial
10
Hendecennial *
11
Duodecennial
12
Tredecennial *
13
Quindecennial
15
Sextodecennial *
16
Septendecennial
17
Vigintennial *
20
Trigentennial *
30
Quadragennial
40
Quinquagenary
50
Sexagennial *
60
Septuagennial *
70
Septuagesiquintennial *
75
Octogintennial *
80
Nonagintennial *
90
Centennial
100
Quasquicentennial
125
Sesquicentennial
150
Terquasquicentennial or Septaquintaquinquecentennial *
175
Bicentennial
200
Quasquibicentennial *
225
Semiquincentennial *
250
Tercentennial
300
Semiseptcentennial *
350
Quatercentenary
400
Quincentennial
500
Sexcentennial *
600
Septcentennial *
700
Octocentennial
800
Millenial
1,000
Quindecimillenial
15,000
Note:- Interval names marked with a * do not appear in major dictionaries but follow a logical linguistic progression.

A time conversion factor is a numerical value used to convert time measurements from one unit to another. Time can be measured in various units, such as seconds (s), minutes (min), hours (hr), days (day), and so on. Time conversion factors allow you to convert time measurements between different units based on their relationships.

Here are some common time conversion factors:

1. **Seconds to Minutes:** 1 minute (min) = 60 seconds (s)

   – To convert seconds to minutes, divide the number of seconds by 60.

2. **Minutes to Hours:** 1 hour (hr) = 60 minutes (min)

   – To convert minutes to hours, divide the number of minutes by 60.

3. **Hours to Days:** 1 day = 24 hours (hr)

   – To convert hours to days, divide the number of hours by 24.

4. **Days to Weeks:** 1 week = 7 days

   – To convert days to weeks, divide the number of days by 7.

5. **Weeks to Years:** 1 year = 52 weeks (approximately)

   – To convert weeks to years, divide the number of weeks by 52 (approximately).

These conversion factors allow you to express time measurements in different units depending on the context or requirements of your calculations or analysis. They are commonly used in various fields such as physics, engineering, finance, and everyday life.

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