Deadline countdowns for academic conferences in Security and Privacy
Complementary library for date-fns v2 adding IANA time zone support
Lightweight libraries to convert between IANA, Windows, Rails, and POSIX time zones.
Accurate current and historical timezones for Ruby with support for Geonames and Google latitude - longitude lookups.
All sorts of useful information about every country packaged as convenient little country objects. It includes data from ISO 3166 (countries and states/subdivisions ), ISO 4217 (currency), and E.164 (phone numbers).
TZInfo - Ruby Timezone Library
Time calculations using business hours.