Time

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The following units are included in this section:

 

ID

Unit

Definition

Wikipedia page and other notes

1

second (s)

-

https://en.wikipedia.org/wiki/Second

2

millisecond (ms)

10-3 s

https://en.wikipedia.org/wiki/Millisecond

3

microsecond (μs)

10-6 s

https://en.wikipedia.org/wiki/Microsecond

4

nanosecond (ns)

10-9 s

https://en.wikipedia.org/wiki/Nanosecond

5

picosecond (ps)

10-12 s

https://en.wikipedia.org/wiki/Picosecond

6

minute (min)

60 s

https://en.wikipedia.org/wiki/Minute

7

hour (h)

60 min = 3600 s

https://en.wikipedia.org/wiki/Hour

8

day (d)

24 h = 86,400 s

https://en.wikipedia.org/wiki/Day

Not to be confused with the stellar day

9

week

7 days = 604,800 s

https://en.wikipedia.org/wiki/Week

10

fortnight

14 days = 1,209,600 s

https://en.wikipedia.org/wiki/Fortnight

11

year [common = 365 days]

365 days = 31,536,000 s

https://en.wikipedia.org/wiki/Common_year

Not to be confused with the Julian year

12

year [Julian = 365.25 days]

365.25 days = 31,557,600 s

https://en.wikipedia.org/wiki/Julian_year_(astronomy)

Not to be confused with the common year

13

decade [common]

10 common years = 315,360,000 s

https://en.wikipedia.org/wiki/Decade

Not to be confused with the Julian decade

14

decade [Julian]

10 Julian years = 315,576,000 s

https://en.wikipedia.org/wiki/Decade

Not to be confused with the common decade

15

century [common]

100 common years

https://en.wikipedia.org/wiki/Century

Not to be confused with the Julian century

16

century [Julian]

100 Julian years

https://en.wikipedia.org/wiki/Century

Not to be confused with the common century

17

millennium [common]

1000 common years

https://en.wikipedia.org/wiki/Millennium

Not to be confused with the Julian millennium

18

millennium [Julian]

1000 Julian years

https://en.wikipedia.org/wiki/Millennium

Not to be confused with the common millennium

 

All the above definitions of the various units are EXACT.

Note: In the above, a period (.) is used to indicate the decimal place and a comma (,) is used to separate groups of thousands.

 

Type of conversion relationship: DIRECTLY PROPORTIONAL (y=ax)

Example conversion diagram (see two units in bold above):

Time