Using TAI internally would be much better than what we have now. But another problem is that leap seconds are only announced 6 months in advance, which is not e

Using TAI internally would be much better than what we have now. But another problem is that leap seconds are only announced 6 months in advance, which is not enough to update all computing devices (including embedded ones, etc.). See Poul Henning Kamp's article linked elsewhere in this discussion for an idea on how to address that.