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46 lines
1.8 KiB
Text
46 lines
1.8 KiB
Text
=== Timezone Specifiers
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Certain methods in class Time accept arguments that specify timezones:
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- Time.at: keyword argument +in:+.
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- Time.new: positional argument +zone+ or keyword argument +in:+.
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- Time.now: keyword argument +in:+.
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- Time#getlocal: positional argument +zone+.
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- Time#localtime: positional argument +zone+.
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The value given with any of these must be one of the following:
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- A string offset from UTC in the form <tt>'+HH:MM'</tt> or <tt>-HH:MM</tt>,
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where:
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- +HH+ is the 2-digit hour in the range <tt>0..23</tt>.
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- +MM+ is the 2-digit minute in the range <tt>0..59</tt>.
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Examples:
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t = Time.utc(2000, 1, 1, 20, 15, 1) # => 2000-01-01 20:15:01 UTC
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Time.at(t, in: '-23:59') # => 1999-12-31 20:16:01 -2359
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Time.at(t, in: '+23:59') # => 2000-01-02 20:14:01 +2359
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- A letter in the range <tt>'A'..'I'</tt> or <tt>'K'..'Z'</tt>;
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see {List of military time zones}[https://en.wikipedia.org/wiki/List_of_military_time_zones]:
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t = Time.utc(2000, 1, 1, 20, 15, 1) # => 2000-01-01 20:15:01 UTC
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Time.at(t, in: 'A') # => 2000-01-01 21:15:01 +0100
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Time.at(t, in: 'I') # => 2000-01-02 05:15:01 +0900
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Time.at(t, in: 'K') # => 2000-01-02 06:15:01 +1000
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Time.at(t, in: 'Y') # => 2000-01-01 08:15:01 -1200
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Time.at(t, in: 'Z') # => 2000-01-01 20:15:01 UTC
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- An integer number of seconds in the range <tt>-86399..86399</tt>:
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t = Time.utc(2000, 1, 1, 20, 15, 1) # => 2000-01-01 20:15:01 UTC
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Time.at(t, in: -86399) # => 1999-12-31 20:15:02 -235959
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Time.at(t, in: 86399) # => 2000-01-02 20:15:00 +235959
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--
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TODO: Pull in and revise the text at the link,
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then add the example class TZ from the tests.
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++
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- A timezone object;
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see {Timezone Argument}[rdoc-ref:Time@Timezone+Argument] for details.
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