Add Or Subtract Weeks, Days, Hours, Minutes, Seconds
60 seconds === 1 minute
60 minutes === 1 hour
24 hours === 1 day
7 days === 1 week

The decimal measuring system uses 100 to advance from centimeters to Meters and 1,000 to advance to Kilometers.

The process of adding and subtracting time uses a multi-base system of 60, 60, 24 and 7 to move from seconds through weeks.

To do a calculation follow the following steps :-

Select Add or Subtract to add or subtract components.
Input the number of components to add or subtract.
Decide the form in which you want your results.
Then press 'Add or Subtract Time component(s)'.
Add or Subtract Time
See also :

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