Rails 5.1:
ActiveSupport::TimeZone.new("International Date Line West")<ActiveSupport::TimeZone:0x0000564eac8abac8
@name="International Date Line West",
@tzinfo=#<TZInfo::DataTimezone: Pacific/Midway>,
@utc_offset=nil
>ActiveSupport::TimeZone.new("International Date Line West").parse("2020-04-18").utc_offset=> -39600Rails 5.2
ActiveSupport::TimeZone.new("International Date Line West")<ActiveSupport::TimeZone:0x00007f9754cf0ad8
@name="International Date Line West",
@tzinfo=#<TZInfo::DataTimezone: Etc/GMT+12>,
@utc_offset=nil
>ActiveSupport::TimeZone.new("International Date Line West").parse("2020-04-18").utc_offset=> -43200