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4.3.1 duration Class

A duration represents a period of time in fixed-length seconds (or minutes, hours, or whatever you want to measure it in.)

A duration has a resolution of about a nanosecond for typical dates. The underlying representation is a double representing the number of days elapsed, similar to a datenum, except it’s interpreted as relative to some other reference point you provide, instead of being relative to the Matlab/Octave epoch.

You can add or subtract a duration to a datetime to get another datetime. You can also add or subtract durations to each other.