OnValid function throwing a.getTime is not a function error when working with a composite schedule

[Ankurrana]

Code Snippet :

var schedule = 

later.parse.recur()
.on(25).dayOfMonth().on(5).month().on(2016).year()
.and()
.on(26).dayOfMonth().on(5).month().on(2016).year()
.and()
.on(27).dayOfMonth().on(5).month().on(2016).year()

var sched = later.schedule(schedule);
var ans = sched.isValid(new Date('2016-05-27'));
console.log(ans);

Error Message:

TypeError: a.getTime is not a function
at f:\Projects\DragonFly\node_modules\later\later.js:777:24
at findNext (f:\Projects\DragonFly\node_modules\later\later.js:785:23)
at getInstances (f:\Projects\DragonFly\node_modules\later\later.js:637:52)