bower_components/jquery-validation/src/additional/time.js

$.validator.addMethod( "time", function( value, element ) {
	return this.optional( element ) || /^([01]\d|2[0-3]|[0-9])(:[0-5]\d){1,2}$/.test( value );
}, "Please enter a valid time, between 00:00 and 23:59" );