Here's a demo that determines which rows of a timetable have times that are between two values.
% Create a demo timetable
TT = timetable((datetime('now') - minutes(0:248:60000))', rand(242,1));
% Get time-part (in duration format)
dur = TT.Time - dateshift(TT.Time, 'start', 'day');
% Define sunrise and sunset
sunrise = duration(6,30,0); % 6:00
sunset = duration(20,30,0); % 20:30
% Determine which times are between sunrise and sunset
idx = dur >= sunrise & dur <= sunset;
% Isolate rows of timetable that are during daylight
TT(idx,:)
Note: Sunrise and sunset are not fixed every day. A better approach would be to us a vector of sunrise and sunset times the same length as the datetime column and to determine whether each row is between those associated sunrise/sunset values.
