Count duration between two times after midnight

Question

How to count duration between two times?

var start = moment(\'17:00\', \"HH:mm\");
var end = moment(\'02:15\', \"HH:mm\");
moment.duration(end.diff(start)).a         


        

Answer 1

It's the simpliest way to count difference in one day:

var start = moment('17:00', "HH:mm");
var end = moment('02:15', "HH:mm");
var duration = moment.duration(end.diff(start)).asHours();
if (duration < 0) duration += 24;