--- a/tai64nfrac.c	2015-02-10 15:35:18.408418665 +0100
+++ b/tai64nfrac.c	2015-02-10 15:35:44.458680163 +0100
@@ -43,7 +43,7 @@
 	nanoseconds += u;
     }
     seconds -= 4611686018427387914ULL;
-    printf("%lu.%lu ", seconds, nanoseconds);
+    printf("%lu.%09lu ", seconds, nanoseconds);
     return c;
 }