JSFiddle - React, Tailwind, and code Playground
HTML
<div id="anons">ANONS
<div id="n">
Открытие<span>3</span>.09.12 г.
</div>
<div id="a">
Открытие<span>3</span>.09.12 г.
</div>
<div id="ayuyty">
Открытие<span>3</span>.09.12 г.
</div>
<div id="affeef">
Открытие<span>3</span>.09.12 г.
</div>
<div id="ayfefwefty">
Открытие<span>2</span>.09.12 г.
</div>
</div>
<div id="zavtra">ZAVTRA
</div>
CSS
#anons {width:500px;height:500px;background:#b3b3b3;float:left;}
#zavtra {width:500px;height:500px;background:#ccc;float:left;}
JavaScript
var date = new Date;
var d = date.getDate();
var zd = d+1;
var a = document.getElementById('anons');
var z = document.getElementById('zavtra');
var anonsChildren = a.children;
for(var i=0;i<anonsChildren.length;i++) {
var date_open = anonsChildren[i].children[0].innerHTML;
if(zd==date_open) perenos();
if(d>date_open) kill();
}
function perenos() {
z.appendChild(anonsChildren[i])
}
function kill() {
a.removeChild(anonsChildren[i])
}