1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT RUN-TIME COMPONENTS                         --
4--                                                                          --
5--              A D A . C A L E N D A R . T I M E _ Z O N E S               --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9-- This specification is derived from the Ada Reference Manual for use with --
10-- GNAT.  In accordance with the copyright of that document, you can freely --
11-- copy and modify this specification,  provided that if you redistribute a --
12-- modified version,  any changes that you have made are clearly indicated. --
13--                                                                          --
14------------------------------------------------------------------------------
15
16--  This package provides routines to determine the offset of dates to GMT.
17--  It is defined in the Ada 2005 RM (9.6.1).
18
19package Ada.Calendar.Time_Zones is
20
21   --  Time zone manipulation
22
23   type Time_Offset is range -(28 * 60) .. 28 * 60;
24
25   Unknown_Zone_Error : exception;
26
27   function UTC_Time_Offset (Date : Time := Clock) return Time_Offset;
28   --  Returns (in minutes), the difference between the implementation-defined
29   --  time zone of Calendar, and UTC time, at the time Date. If the time zone
30   --  of the Calendar implementation is unknown, raises Unknown_Zone_Error.
31
32end Ada.Calendar.Time_Zones;
33