Field	Bits	Number of bits	Description
Timestamp	63 to 22	42 bits	Milliseconds since Discord Epoch, the first second of 2015 or 1420070400000.
Internal worker ID	21 to 17	5 bits
Internal process ID	16 to 12	5 bits
Increment	11 to 0	12 bits	For every ID that is generated on that process, this number is incremented

How To Convert Discord ID > Date

In Javascript: new Date((id / 4194304) + 1420070400000);

// function found on internet
function getCreationDate(id) { 
  return new Date((id / 4194304) + 1420070400000); 
}
getCreationDate("insertId")

// my own function
const getTime = (id) => {
  return ((Number(BigInt.asUintN(64, id) >> 22n)) + 1420070400000) / 1000 | 0
}
getTime("instertId")

Exemple: new Date((622716865428324353 / 4194304) + 1420070400000);