Hi, libtai is a library for storing and manipulating dates and times. libtai is designed to be fast and long-lasting. It supports two time scales: (1) TAI64, covering a few hundred billion years with 1-second precision; (2) TAI64NA, covering the same period with 1-attosecond precision. Its overall UTC-to-TAI conversion speed is 100x better than the usual UNIX mktime() implementation. devel doesn't seem like the right category, but I couldn't think of any better place. If someone thinks of a better place, by all means use it. See attached or http://rt.fm/~bk/tmp/libtai.tar.gz. Enjoy!