In article <4202D3B1.8060709@cql.com>, Seth Kurtzberg
I'll dig it up. On Iridium we programmed in the leap seconds for the useful life of the vehicle, which is about five years. It is guaranteed to be accurate, but in the case that we used it there was an extra leap second just before we launched, and none after that. Partly luck, of course.
I found this: http://www.boulder.nist.gov/timefreq/pubs/bulletin/leapsecond.htm It doesn't have any information about future leap seconds beyond the announcement that there wouldn't be one at the end of June 2005. In general I don't believe we get more than six months' notice of them. I daresay you were lucky with your project: they could have announced another leap second two or three years after your product was released. -- Ashley Yakeley, Seattle WA