class ActiveSupport::TimeZone

Time.zone.rfc3339('1999-12-31') # => ArgumentError: invalid date
Time.zone = 'Hawaii' # => "Hawaii"

allow for missing components.
be raised. This is much stricter than either +parse+ or +iso8601+ which
If the time or zone components are missing then an +ArgumentError+ will

Time.zone.rfc3339('2000-01-01T00:00:00Z') # => Fri, 31 Dec 1999 14:00:00 HST -10:00
Time.zone = 'Hawaii' # => "Hawaii"

of +self+ from an RFC 3339 string.
\Method for creating new ActiveSupport::TimeWithZone instance in time zone

def rfc3339(str)
  parts = Date._rfc3339(str)
  raise ArgumentError, "invalid date" if parts.empty?
  time = Time.new(
    parts.fetch(:year),
    parts.fetch(:mon),
    parts.fetch(:mday),
    parts.fetch(:hour),
    parts.fetch(:min),
    parts.fetch(:sec) + parts.fetch(:sec_fraction, 0),
    parts.fetch(:offset)
  )
  TimeWithZone.new(time.utc, self)
end