If you need more than second precision then millisecond doesn't get you much further. The fact that the epoch ends in 120 years is a bit more worrying, but is a

If you need more than second precision then millisecond doesn't get you much further. The fact that the epoch ends in 120 years is a bit more worrying, but is also just about non-critical enough that it will be ignored for at least the next century. Also, to all future historians of 2150, sorry about the mess, but yes we knew this was going to happen. Whatever it was.