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-== Timezones
-
-=== Timezone Specifiers
-
-Certain \Time methods accept arguments that specify timezones:
-
-- Time.at: keyword argument +in:+.
-- Time.new: positional argument +zone+ or keyword argument +in:+.
-- Time.now: keyword argument +in:+.
-- Time#getlocal: positional argument +zone+.
-- Time#localtime: positional argument +zone+.
-
-The value given with any of these must be one of the following
-(each detailed below):
-
-- {Hours/minutes offset}[rdoc-ref:timezones.rdoc@Hours-2FMinutes+Offsets].
-- {Single-letter offset}[rdoc-ref:timezones.rdoc@Single-Letter+Offsets].
-- {Integer offset}[rdoc-ref:timezones.rdoc@Integer+Offsets].
-- {Timezone object}[rdoc-ref:timezones.rdoc@Timezone+Objects].
-
-==== Hours/Minutes Offsets
-
-The zone value may be a string offset from UTC
-in the form <tt>'+HH:MM'</tt> or <tt>'-HH:MM'</tt>,
-where:
-
-- +HH+ is the 2-digit hour in the range <tt>0..23</tt>.
-- +MM+ is the 2-digit minute in the range <tt>0..59</tt>.
-
-Examples:
-
-  t = Time.utc(2000, 1, 1, 20, 15, 1) # => 2000-01-01 20:15:01 UTC
-  Time.at(t, in: '-23:59')            # => 1999-12-31 20:16:01 -2359
-  Time.at(t, in: '+23:59')            # => 2000-01-02 20:14:01 +2359
-
-==== Single-Letter Offsets
-
-The zone value may be a  letter in the range <tt>'A'..'I'</tt>
-or <tt>'K'..'Z'</tt>;
-see {List of military time zones}[https://en.wikipedia.org/wiki/List_of_military_time_zones]:
-
-  t = Time.utc(2000, 1, 1, 20, 15, 1) # => 2000-01-01 20:15:01 UTC
-  Time.at(t, in: 'A')                 # => 2000-01-01 21:15:01 +0100
-  Time.at(t, in: 'I')                 # => 2000-01-02 05:15:01 +0900
-  Time.at(t, in: 'K')                 # => 2000-01-02 06:15:01 +1000
-  Time.at(t, in: 'Y')                 # => 2000-01-01 08:15:01 -1200
-  Time.at(t, in: 'Z')                 # => 2000-01-01 20:15:01 UTC
-
-==== \Integer Offsets
-
-The zone value may be an integer number of seconds
-in the range <tt>-86399..86399</tt>:
-
-  t = Time.utc(2000, 1, 1, 20, 15, 1) # => 2000-01-01 20:15:01 UTC
-  Time.at(t, in: -86399)              # => 1999-12-31 20:15:02 -235959
-  Time.at(t, in: 86399)               # => 2000-01-02 20:15:00 +235959
-
-==== Timezone Objects
-
-In most cases, the zone value may be an object
-responding to certain timezone methods.
-
-\Exceptions (timezone object not allowed):
-
-- Time.new with positional argument +zone+.
-- Time.now with keyword argument +in:+.
-
-The timezone methods are:
-
-- +local_to_utc+:
-
-  - Called when Time.new is invoked with +tz+
-    as the value of positional argument +zone+ or keyword argument +in:+.
-  - Argument: a <tt>Time::tm</tt> object.
-  - Returns: a \Time-like object in the UTC timezone.
-
-- +utc_to_local+:
-
-  - Called when Time.at or Time.now is invoked with +tz+
-    as the value for keyword argument +in:+,
-    and when Time#getlocal or Time#localtime is called with +tz+
-    as the value for positional argument +zone+.
-  - Argument: a <tt>Time::tm</tt> object.
-  - Returns: a \Time-like object in the local timezone.
-
-A custom timezone class may have these instance methods,
-which will be called if defined:
-
-- +abbr+:
-
-  - Called when Time#strftime is invoked with a format involving <tt>%Z</tt>.
-  - Argument: a <tt>Time::tm</tt> object.
-  - Returns: a string abbreviation for the timezone name.
-
-- +dst?+:
-
-  - Called when Time.at or Time.now is invoked with +tz+
-    as the value for keyword argument +in:+,
-    and when Time#getlocal or Time#localtime is called with +tz+
-    as the value for positional argument +zone+.
-  - Argument: a <tt>Time::tm</tt> object.
-  - Returns: whether the time is daylight saving time.
-
-- +name+:
-
-  - Called when <tt>Marshal.dump(t) is invoked
-  - Argument: none.
-  - Returns: the string name of the timezone.