return this}function Ft(e){return!!this.isValid()&&(e=e?wt(e).utcOffset():0,(this.utcOffset()-e)%60===0)}function Ht(){return this.utcOffset()>this.clone().month(0).utcOffset()||this.utcOffset()>this.clone().month(5).utcOffset()}function Lt(){if(!y(this._isDSTShifted))return this._isDSTShifted;var e={};if(g(e,this),e=yt(e),e._a){var t=e._isUTC?h(e._a):wt(e._a);this._isDSTShifted=this.isValid()&&M(e._a,t.toArray())>0}else this._isDSTShifted=!1;return this._isDSTShifted}function Gt(){return!!this.isValid()&&!