>> require 'time'
=> true
>> Time::ZoneOffset
NameError: uninitialized constant Time::ZoneOffset
  from (irb):2
>> (class << Time; self; end)::ZoneOffset
=> {"V"=>-9, "K"=>10, "PDT"=>-7, "W"=>-10, "L"=>11, "A"=>1, "X"=>-11, 
"M"=>12, "B"=>2, "Y"=>-12, "N"=>-1, "C"=>3, "MST"=>-7, "GMT"=>0, 
"O"=>-2, "D"=>4, "CST"=>-6, "Z"=>0, "UTC"=>0, "P"=>-3, "E"=>5, "Q"=>-4, 
"F"=>6, "PST"=>-8, "EST"=>-5, "R"=>-5, "G"=>7, "MDT"=>-6, "S"=>-6, 
"H"=>8, "CDT"=>-5, "T"=>-7, "I"=>9, "UT"=>0, "U"=>-8, "EDT"=>-4}
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