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  Units of Measurement
 

 

 

MEASUREMENTS SI UNITS - Time

Time (second): - The second is the duration of 9,192,631,770, period of the radiation corresponding to the transition between the to hyperfine levels of the ground state of the cesium-133 atom. (1967). It is denoted by s.

 

60 seconds ( secs, " ) = 1 minute.
60 minutes ( mins, ' ) = 1 hour
24 hours ( hrs ) = 1 day
 7 days ( d ) = 1 week ( wk )
28, 29, 30 or 31 days = 1 month
12 months ( m ) = 1 year
10 years ( y ) = 1 decade
1000 years   1 millenium

 

 

   
 
 
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