I wrote: > (GPS doesn't use leap seconds either, btw) And according to this URL: http://www.angrycoder.com/article.aspx?cid=5&y=2004&m=5&d=13 .NET's DateTime is derived from TAI (i.e. it doesn't include leap seconds). -kzm -- If I haven't seen further, it is by standing in the footprints of giants