Misskey v2099.99.9は以下をコピーしてお使いください。

<!doctypehtml><meta charset=UTF-8><meta content="width=device-width,initial-scale=1"name=viewport><h1>Misskey</h1><div id=clock></div><script>(()=>{const t=document.getElementById("clock");function e(t){return t.toString().padStart(2,"0")}function n(){const n=new Date,o=e(n.getFullYear()),c=e(n.getMonth()+1),g=e(n.getDate()),r=e(n.getHours()),u=e(n.getMinutes()),a=e(n.getSeconds());t.textContent=`${o}/${c}/${g} ${r}:${u}:${a}`}setInterval(n,1e3),n()})();</script>