Time elapsed between date vectors
Compute the time elapsed between a specific time and the current time, to 0.01-second accuracy.
Define the initial date and time and convert to date vector form.
format shortg str = 'March 28, 2012 11:51:00'; t1 = datevec(str,'mmmm dd, yyyy HH:MM:SS')
t1 = 2012 3 28 11 51 0
Determine the current date and time.
t2 = clock
t2 = 2014 9 20 0 1 49.381
The clock function returns the current date and time as a date vector.
Use etime to compute the number of seconds between t1 and t2.
e = etime(t2,t1)
e = 7.8236e+07
To time the duration of an event, use the timeit or tic and toc functions instead of clock and etime. The clock function is based on the system time, which can be adjusted periodically by the operating system, and thus might not be reliable in time comparison operations.
etime does not account for the following:
Daylight savings time adjustments.
Differences in time zones.