On Mon, Feb 22, 2010 at 4:38 PM, Daniel Ruoso <dan...@ruoso.com> wrote: > The biggest difference proposed by the use of TAI is that when you ask > for the number of seconds between "2008-12-31T23:59:59+0000" and > "2009-01-01T00:00:00+0000" you'll get 2 because of the leap second. But > you don't need to know how many seconds there were in the TAI scale > since the 1958 epoch to find that out, you just need to know when we had > leap seconds.
What do you mean? The number of seconds between 2008-12-31T23:59:59+0000 TAI and 2009-01-01T00:00:00+0000 TAI was 1 because TAI doesn't have leap seconds. UTC does, but TAI doesn't.