Javascript Date() give wrong date off by one hour

I send this date from my controller in java (Spring-MVC) the type in mysql is datetime

@Temporal(TemporalType.TIMESTAMP) 
@Column(name = "..") public Date getYy() { 
    return this.yy; 
}

as : [2015-09-30 00:00:00.0]

When i get this dates with ajax as 1443567600000 :

new Date(1443567600000) convert to Tue Sep 29 2015 23:00:00 GMT+0000 (Maroc)

So why i get wrong date off by one hour?

SOLUTION

We resolve it by

d = new Date(value) ;
d.setTime( d.getTime() - new Date().getTimezoneOffset()*60*1000 );

because it was Daylight saving time (DST) or summer time problem. good article