1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- A D A . C A L E N D A R . T I M E _ Z O N E S --
9 -- Copyright (C) 2005-2006, Free Software Foundation, Inc. --
11 -- This specification is derived from the Ada Reference Manual for use with --
12 -- GNAT. The copyright notice above, and the license provisions that follow --
13 -- apply solely to the contents of the part following the private keyword. --
15 -- GNAT is free software; you can redistribute it and/or modify it under --
16 -- terms of the GNU General Public License as published by the Free Soft- --
17 -- ware Foundation; either version 2, or (at your option) any later ver- --
18 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
19 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
20 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
21 -- for more details. You should have received a copy of the GNU General --
22 -- Public License distributed with GNAT; see file COPYING. If not, write --
23 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
24 -- MA 02111-1307, USA. --
26 -- As a special exception, if other files instantiate generics from this --
27 -- unit, or you link this unit with other files to produce an executable, --
28 -- this unit does not by itself cause the resulting executable to be --
29 -- covered by the GNU General Public License. This exception does not --
30 -- however invalidate any other reasons why the executable file might be --
31 -- covered by the GNU Public License. --
33 -- GNAT was originally developed by the GNAT team at New York University. --
34 -- Extensive contributions were provided by Ada Core Technologies Inc. --
36 ------------------------------------------------------------------------------
38 -- This package provides routines to determine the offset of dates to GMT.
39 -- It is defined in the Ada 2005 RM (9.6.1).
41 package Ada.Calendar.Time_Zones is
43 -- Time zone manipulation
45 type Time_Offset is range -(28 * 60) .. 28 * 60;
47 Unknown_Zone_Error : exception;
49 function UTC_Time_Offset (Date : Time := Clock) return Time_Offset;
50 -- Returns, as a number of minutes, the difference between the
51 -- implementation-defined time zone of Calendar, and UTC time, at the time
52 -- Date. If the time zone of the Calendar implementation is unknown, then
53 -- Unknown_Zone_Error is raised.
55 end Ada.Calendar.Time_Zones;