Convert Timestamp to Date

const timestamps = document.querySelectorAll(".views-field-multimedia-date-aggregated > span")
//console.log(new Date(timestamp * 1000))

timestamps.forEach(timestamp => {
 const timestampInnerText = timestamp.innerText
 const theDate = new Date(timestampInnerText * 1000)
 console.log(theDate)
 var month = theDate.getMonth() + 1
 console.log(String(month).length)
 if (String(month).length < 2)
   month = '0' + month;
 var day = theDate.getDate()
 if (String(day).length < 2)
   day = '0' + day;
 const year = theDate.getFullYear()
 console.log(day)
 console.log(month)
 console.log(year)
 timestamp.innerText = String(day) + "." + String(month) + "." + String(year)
})