DateAndTime Ruby on Rails 5.1.2 Module DateAndTime activesupport/lib/active_support/core_ext/date_and_time/calculations.rb activesupport/lib/active_support/core_ext/date_and_time/compatibility.rb activesupport/lib/active_support/core_ext/date_and_time/zones.rb Namespace MODULE DateAndTime::Calculations MODULE DateAndTime::Compatibility MODULE DateAndTime::Zones