MD5 (cal.rb-1.13/cal.rb) = cfed4a8c9e3cff62701fd0260bbd8f96
MD5 (cal.rb-1.13/Calendar.rb) = 9775d6d6095a84e2c2bc58f8bc491ec5
MD5 (cal.rb-1.13/era_name) = 2c3c6a4de0d7d8a2101fbe7165509982