Moment JS Subtract Method Returns 12 Hour Difference When There Is Only Zero Hour Left

I want to display remaining hours, minutes and seconds to a specific preset time (01:00 PM) from the current time with help of moment js. I am using the following code, var n = new

Solution 1:

You can't use toLocaleTimeString() because it displays the time of a date, so, as Trunst said in his comment, it will display 12 instead of 0 in case of a 12-hour format.

You can use the format() function of momentjs to force it to 24-hours format:

var eta = a.subtract(b).format("H:mm:ss");

Check a demo there which displays a countdown to your ETA

Note the use of diff instead of substract, see Matt Johnson's comment for the explanations.

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Note that if you wan to display an ETA greater than 24h, you will have to use the duration object of momentjs.