%% Compare Dates and Time
% This example shows how to compare datetime and duration arrays. You can perform an element-by-element comparison of values in two datetime arrays or two duration arrays using relational operators, such as > and <.
%% Compare Datetime Arrays
% Compare two datetime arrays. The arrays must be the same size or one can be a scalar.

A = datetime(2013,07,26) + calyears(0:2:6)
B = datetime(2014,06,01)

%

A < B

% The < operator returns logical 1 (true) where a datetime in A occurs before a datetime in B.
%
% Compare a datetime array to text representing a date.

A >= '26-Sep-2014'

% Comparisons of datetime arrays account for the time zone information of each array.
%
% Compare September 1, 2014 at 4:00 p.m. in Los Angeles with 5:00 p.m. on the same day in New York.

A = datetime(2014,09,01,16,0,0,'TimeZone','America/Los_Angeles',...
    'Format','dd-MMM-yyyy HH:mm:ss Z')

%

B = datetime(2014,09,01,17,0,0,'TimeZone','America/New_York',...
    'Format','dd-MMM-yyyy HH:mm:ss Z')

%

A < B

% 4:00 p.m. in Los Angeles occurs after 5:00 p.m. on the same day in New York.
%
%% Compare Durations
% Compare two duration arrays.

A = duration([2,30,30;3,15,0])
B = duration([2,40,0;2,50,0])

%

A >= B

%
% Compare a duration array to a numeric array. Elements in the numeric array are treated as a number of fixed-length (24-hour) days.

A < [1; 1/24]

%
%% Determine if Dates and Time Are Contained Within an Interval
% Use the isbetween function to determine whether values in a datetime array lie within a closed interval.
% Define endpoints of an interval.

tlower = datetime(2014,08,01)
tupper = datetime(2014,09,01)

%
% Create a datetime array and determine whether the values lie within the interval bounded by t1 and t2.

A = datetime(2014,08,21) + calweeks(0:2)

%

tf = isbetween(A,tlower,tupper)

% Copyright 2012 The MathWorks, Inc.