How to compare only HH:mm?

After looking through other MomentJS questions I’m still stumped as to how one would use moment to simply compare two different times

I need (want) the day/date to be ignored.

Use case: I’m reading a schedule w/ start & end times from a config file. This is done using Node.js

Start time = 6:30 PM
End time = 3:30 AM

var currentTime= moment();    // e.g. 11:00 pm
var startTime = moment('06:30 pm', "HH:mm a");
var endTime = moment('03:30 am', "HH:mm a");

amIBetween = currentTime.isBetween(startTime , endTime);
console.log(amIBetween);   //  returns false.  if date ignored I expect TRUE

My scenario is technically spanning two days and I understand why it’s false.

I need (expect) moment to return TRUE - i.e. that currentTime isBeteen startTime and endTime and falls in that range.

I thought I had it solved by checking if endTime hour is > 12 then add a day to make moment understand it’s the following day. e.g.

if (startTime.hour() >=12 && endTime.hour() <=12 )
    {
        endTime.add(1, "days");       // handle spanning days
    }

    var isBetween = currentTime.isBetween(startTime, endTime);   // TRUE

But if currentTime is also after midnight then it breaks - e.g.

01:30am will not be considered between 06:30pm and 03:30am - also because of different days

Any other suggestions for accomplishing this and simply ignoring the day/date?

I’m finding it hard to believe that it’s this complex, but maybe it is :\

Here’s further clarification that issue arises with spanning days, even when trying to be more explicit:

var currentTime= moment('11:00p', "HH:mm a");
var startTime = moment('06:00p', "HH:mm a");
var endTime = moment('03:30a', "HH:mm a");

currentTime.toString(); //"Fri Oct 28 2016 23:00:00 GMT-0400"
startTime.toString();   // "Fri Oct 28 2016 18:00:00 GMT-0400"
endTime.toString();    // "Fri Oct 28 2016 03:30:00 GMT-0400"

currentTime.isBetween(startTime, endTime);  // false
currentTime.isAfter(endTime) && currentTime.isBefore(startTime); //false
currentTime.isAfter(startTime) && currentTime.isBefore(endTime); //false

Seems kind of obvious that they’d be false since the day/date is considered by moment. This is what I’m trying to get around.

The following would work:

endTime.add(1, "days");
currentTime.isBetween(startTime, endTime);  // TRUE

This would mean however, that I’d need to check if the START TIME was before 12AM && the ENDTIME as after 12AM then add 1 day to ENDTIME.

Usually, if you don’t care about the end time’s date, it’s better to just keep track of the hours and minutes explicitly, but of course I don’t know anything about your app. So to answer it directly, define a new function for returning the number of minutes:

var minutesOfDay = function(m){
  return m.minutes() + m.hours() * 60;
}

and then check that:

return minutesOfDay(now) > minutesOfDay(end);

As an aside, moment() does the same thing as moment(new Date()), so that should save you some text.