It's a bug in DateTime::Calendar::Hebrew. It's time_zone method is supposed to return a DateTime::TimeZone object, but it returns the string 'floating'.

Fix to DateTime-Calendar-Hebrew-0.04/Hebrew.pm: 

-sub time_zone { 'floating' }
+use DateTime::TimeZone::Floating qw( );
+sub time_zone { DateTime::TimeZone::Floating->new() }

[download]

In reply to Re: Can't locate object method "is_floating" via package "floating" by ikegami
in thread Can't locate object method "is_floating" via package "floating" by Anonymous Monk

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