Main modules

• DateTime
• Date::Manip
• Date::Format, Date::Parse
• Date::Simple

Parsing

• high-level
  • HTTP::Date
  • Date::Parse
  • Time::ParseDate
  • DateTime::Format::Natural
  • Date::Manip -- parse()
• low-level
  • Time::Local

Formatting

• strftime() is the quintessential function here, and can be found in various places:
  • POSIX::strftime()
  • DateTime->strftime()
  • Date::Format
• rounding to English expressions (eg. "6 seconds ago", "4 days ago")
  • Time::Duration
  • DateTimeX::Format::Ago
  • DateTime::Format::Human::Duration