This is an Ada 2012 library that implements the internet time protocol, RTF3339.
Leap seconds are not supported as yet as Ada's seconds range is 0 .. 59 which does not include 60, which the RFC does. I also have no clue, yet, how to implement it.
$ cd build/gnat
$ makeAda 2012 compiler.
FSF GNAT 7.3.0
Copyright (C) 2019, Luke A. Guest
New-style BSD, see LICENCE file in source root directory.