Active Support Time With Zone

A Time-like class that can represent a time in any time zone. Necessary because standard Ruby Time instances are limited to UTC and the system’s ENV['TZ'] zone.

You shouldn’t ever need to create a TimeWithZone instance directly via new. Instead use methods local, parse, at, and now on TimeZone instances, and in_time_zone on Time and DateTime instances.

Time.zone = 'Eastern Time (US & Canada)'        # => 'Eastern Time (US & Canada)'
Time.zone.local(2007, 2, 10, 15, 30, 45)        # => Sat, 10 Feb 2007 15:30:45.000000000 EST -05:00
Time.zone.parse('2007-02-10 15:30:45')          # => Sat, 10 Feb 2007 15:30:45.000000000 EST -05:00
Time.zone.at(1171139445)                        # => Sat, 10 Feb 2007 15:30:45.000000000 EST -05:00
Time.zone.now                                   # => Sun, 18 May 2008 13:07:55.754107581 EDT -04:00
Time.utc(2007, 2, 10, 20, 30, 45).in_time_zone  # => Sat, 10 Feb 2007 15:30:45.000000000 EST -05:00

See Time and TimeZone for further documentation of these methods.

TimeWithZone instances implement the same API as Ruby Time instances, so that Time and TimeWithZone instances are interchangeable.

t = Time.zone.now                     # => Sun, 18 May 2008 13:27:25.031505668 EDT -04:00
t.hour                                # => 13
t.dst?                                # => true
t.utc_offset                          # => -14400
t.zone                                # => "EDT"
t.to_fs(:rfc822)                      # => "Sun, 18 May 2008 13:27:25 -0400"
t + 1.day                             # => Mon, 19 May 2008 13:27:25.031505668 EDT -04:00
t.beginning_of_year                   # => Tue, 01 Jan 2008 00:00:00.000000000 EST -05:00
t > Time.utc(1999)                    # => true
t.is_a?(Time)                         # => true
t.is_a?(ActiveSupport::TimeWithZone)  # => true

Methods

Constants

PRECISIONS = Hash.new { |h, n| h[n] = "%FT%T.%#{n}N" }
SECONDS_PER_DAY = 86400

Attributes

[R] time_zone

Class Public methods

new(utc_time, time_zone, local_time = nil, period = nil)

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 51
def initialize(utc_time, time_zone, local_time = nil, period = nil)
  @time_zone, @time = time_zone, local_time
  if utc_time
    @utc = transfer_time_values_to_utc_constructor(utc_time)
    @period = period
  else
    @utc = nil
    @period = get_period_and_ensure_valid_local_time(period)
  end
  @is_utc = zone == "UTC" || zone == "UCT"
end
🔎 See on GitHub

Instance Public methods

+(other)

Adds an interval of time to the current object’s time and returns that value as a new TimeWithZone object.

Time.zone = 'Eastern Time (US & Canada)' # => 'Eastern Time (US & Canada)'
now = Time.zone.now # => Sun, 02 Nov 2014 01:26:28.725182881 EDT -04:00
now + 1000          # => Sun, 02 Nov 2014 01:43:08.725182881 EDT -04:00

If we’re adding a Duration of variable length (i.e., years, months, days), move forward from time, otherwise move forward from utc, for accuracy when moving across DST boundaries.

For instance, a time + 24.hours will advance exactly 24 hours, while a time + 1.day will advance 23-25 hours, depending on the day.

now + 24.hours      # => Mon, 03 Nov 2014 00:26:28.725182881 EST -05:00
now + 1.day         # => Mon, 03 Nov 2014 01:26:28.725182881 EST -05:00

Also aliased as: since, in.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 310
def +(other)
  if duration_of_variable_length?(other)
    method_missing(:+, other)
  else
    result = utc + other

    result.in_time_zone(time_zone)
  end
end
🔎 See on GitHub

-(other)

Subtracts an interval of time and returns a new TimeWithZone object unless the other value acts_like? time. In which case, it will subtract the other time and return the difference in seconds as a Float.

Time.zone = 'Eastern Time (US & Canada)' # => 'Eastern Time (US & Canada)'
now = Time.zone.now # => Mon, 03 Nov 2014 00:26:28.725182881 EST -05:00
now - 1000          # => Mon, 03 Nov 2014 00:09:48.725182881 EST -05:00

If subtracting a Duration of variable length (i.e., years, months, days), move backward from time, otherwise move backward from utc, for accuracy when moving across DST boundaries.

For instance, a time - 24.hours will go subtract exactly 24 hours, while a time - 1.day will subtract 23-25 hours, depending on the day.

now - 24.hours      # => Sun, 02 Nov 2014 01:26:28.725182881 EDT -04:00
now - 1.day         # => Sun, 02 Nov 2014 00:26:28.725182881 EDT -04:00

If both the TimeWithZone object and the other value act like Time, a Float will be returned.

Time.zone.now - 1.day.ago # => 86399.999967
📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 345
def -(other)
  if other.acts_like?(:time)
    getutc - other.getutc
  elsif duration_of_variable_length?(other)
    method_missing(:-, other)
  else
    result = utc - other
    result.in_time_zone(time_zone)
  end
end
🔎 See on GitHub

<=>(other)

Use the time in UTC for comparisons.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 243
def <=>(other)
  utc <=> other
end
🔎 See on GitHub

acts_like_time?()

So that self acts_like?(:time).

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 502
def acts_like_time?
  true
end
🔎 See on GitHub

advance(options)

Uses Date to provide precise Time calculations for years, months, and days according to the proleptic Gregorian calendar. The result is returned as a new TimeWithZone object.

The options parameter takes a hash with any of these keys: :years, :months, :weeks, :days, :hours, :minutes, :seconds.

If advancing by a value of variable length (i.e., years, weeks, months, days), move forward from time, otherwise move forward from utc, for accuracy when moving across DST boundaries.

Time.zone = 'Eastern Time (US & Canada)' # => 'Eastern Time (US & Canada)'
now = Time.zone.now # => Sun, 02 Nov 2014 01:26:28.558049687 EDT -04:00
now.advance(seconds: 1) # => Sun, 02 Nov 2014 01:26:29.558049687 EDT -04:00
now.advance(minutes: 1) # => Sun, 02 Nov 2014 01:27:28.558049687 EDT -04:00
now.advance(hours: 1)   # => Sun, 02 Nov 2014 01:26:28.558049687 EST -05:00
now.advance(days: 1)    # => Mon, 03 Nov 2014 01:26:28.558049687 EST -05:00
now.advance(weeks: 1)   # => Sun, 09 Nov 2014 01:26:28.558049687 EST -05:00
now.advance(months: 1)  # => Tue, 02 Dec 2014 01:26:28.558049687 EST -05:00
now.advance(years: 1)   # => Mon, 02 Nov 2015 01:26:28.558049687 EST -05:00
📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 434
def advance(options)
  # If we're advancing a value of variable length (i.e., years, weeks, months, days), advance from #time,
  # otherwise advance from #utc, for accuracy when moving across DST boundaries
  if options.values_at(:years, :weeks, :months, :days).any?
    method_missing(:advance, options)
  else
    utc.advance(options).in_time_zone(time_zone)
  end
end
🔎 See on GitHub

ago(other)

Subtracts an interval of time from the current object’s time and returns the result as a new TimeWithZone object.

Time.zone = 'Eastern Time (US & Canada)' # => 'Eastern Time (US & Canada)'
now = Time.zone.now # => Mon, 03 Nov 2014 00:26:28.725182881 EST -05:00
now.ago(1000)       # => Mon, 03 Nov 2014 00:09:48.725182881 EST -05:00

If we’re subtracting a Duration of variable length (i.e., years, months, days), move backward from time, otherwise move backward from utc, for accuracy when moving across DST boundaries.

For instance, time.ago(24.hours) will move back exactly 24 hours, while time.ago(1.day) will move back 23-25 hours, depending on the day.

now.ago(24.hours)   # => Sun, 02 Nov 2014 01:26:28.725182881 EDT -04:00
now.ago(1.day)      # => Sun, 02 Nov 2014 00:26:28.725182881 EDT -04:00
📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 373
def ago(other)
  since(-other)
end
🔎 See on GitHub

as_json(options = nil)

Coerces time to a string for JSON encoding. The default format is ISO 8601. You can get %Y/%m/%d %H:%M:%S +offset style by setting ActiveSupport::JSON::Encoding.use_standard_json_time_format to false.

# With ActiveSupport::JSON::Encoding.use_standard_json_time_format = true
Time.utc(2005,2,1,15,15,10).in_time_zone("Hawaii").as_json
# => "2005-02-01T05:15:10.000-10:00"

# With ActiveSupport::JSON::Encoding.use_standard_json_time_format = false
Time.utc(2005,2,1,15,15,10).in_time_zone("Hawaii").as_json
# => "2005/02/01 05:15:10 -1000"
📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 178
def as_json(options = nil)
  if ActiveSupport::JSON::Encoding.use_standard_json_time_format
    xmlschema(ActiveSupport::JSON::Encoding.time_precision)
  else
    %(#{time.strftime("%Y/%m/%d %H:%M:%S")} #{formatted_offset(false)})
  end
end
🔎 See on GitHub

between?(min, max)

Returns true if the current object’s time is within the specified min and max time.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 251
def between?(min, max)
  utc.between?(min, max)
end
🔎 See on GitHub

blank?()

An instance of ActiveSupport::TimeWithZone is never blank

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 513
def blank?
  false
end
🔎 See on GitHub

change(options)

Returns a new ActiveSupport::TimeWithZone where one or more of the elements have been changed according to the options parameter. The time options (:hour, :min, :sec, :usec, :nsec) reset cascadingly, so if only the hour is passed, then minute, sec, usec, and nsec is set to 0. If the hour and minute is passed, then sec, usec, and nsec is set to 0. The options parameter takes a hash with any of these keys: :year, :month, :day, :hour, :min, :sec, :usec, :nsec, :offset, :zone. Pass either :usec or :nsec, not both. Similarly, pass either :zone or :offset, not both.

t = Time.zone.now          # => Fri, 14 Apr 2017 11:45:15.116992711 EST -05:00
t.change(year: 2020)       # => Tue, 14 Apr 2020 11:45:15.116992711 EST -05:00
t.change(hour: 12)         # => Fri, 14 Apr 2017 12:00:00.000000000 EST -05:00
t.change(min: 30)          # => Fri, 14 Apr 2017 11:30:00.000000000 EST -05:00
t.change(offset: "-10:00") # => Fri, 14 Apr 2017 11:45:15.116992711 HST -10:00
t.change(zone: "Hawaii")   # => Fri, 14 Apr 2017 11:45:15.116992711 HST -10:00
📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 394
def change(options)
  if options[:zone] && options[:offset]
    raise ArgumentError, "Can't change both :offset and :zone at the same time: #{options.inspect}"
  end

  new_time = time.change(options)

  if options[:zone]
    new_zone = ::Time.find_zone(options[:zone])
  elsif options[:offset]
    new_zone = ::Time.find_zone(new_time.utc_offset)
  end

  new_zone ||= time_zone
  periods = new_zone.periods_for_local(new_time)

  self.class.new(nil, new_zone, new_time, periods.include?(period) ? period : nil)
end
🔎 See on GitHub

comparable_time()

Alias for: utc.

dst?()

Returns true if the current time is within Daylight Savings Time for the specified time zone.

Time.zone = 'Eastern Time (US & Canada)'    # => 'Eastern Time (US & Canada)'
Time.zone.parse("2012-5-30").dst?           # => true
Time.zone.parse("2012-11-30").dst?          # => false

Also aliased as: isdst.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 100
def dst?
  period.dst?
end
🔎 See on GitHub

eql?(other)

Returns true if other is equal to current object.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 286
def eql?(other)
  other.eql?(utc)
end
🔎 See on GitHub

formatted_offset(colon = true, alternate_utc_string = nil)

Returns a formatted string of the offset from UTC, or an alternative string if the time zone is already UTC.

Time.zone = 'Eastern Time (US & Canada)'   # => "Eastern Time (US & Canada)"
Time.zone.now.formatted_offset(true)       # => "-05:00"
Time.zone.now.formatted_offset(false)      # => "-0500"
Time.zone = 'UTC'                          # => "UTC"
Time.zone.now.formatted_offset(true, "0")  # => "0"
📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 131
def formatted_offset(colon = true, alternate_utc_string = nil)
  utc? && alternate_utc_string || TimeZone.seconds_to_utc_offset(utc_offset, colon)
end
🔎 See on GitHub

freeze()

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 521
def freeze
  # preload instance variables before freezing
  period; utc; time; to_datetime; to_time
  super
end
🔎 See on GitHub

future?()

Returns true if the current object’s time is in the future.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 281
def future?
  utc.future?
end
🔎 See on GitHub

getgm()

Alias for: utc.

getlocal(utc_offset = nil)

Alias for: localtime.

getutc()

Alias for: utc.

gmt?()

Alias for: utc?.

gmt_offset()

Alias for: utc_offset.

gmtime()

Alias for: utc.

gmtoff()

Alias for: utc_offset.

hash()

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 290
def hash
  utc.hash
end
🔎 See on GitHub

httpdate()

Returns a string of the object’s date and time in the format used by HTTP requests.

Time.zone.now.httpdate  # => "Tue, 01 Jan 2013 04:39:43 GMT"
📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 198
def httpdate
  utc.httpdate
end
🔎 See on GitHub

in(other)

Alias for: +.

in_time_zone(new_zone = ::Time.zone)

Returns the simultaneous time in Time.zone, or the specified zone.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 83
def in_time_zone(new_zone = ::Time.zone)
  return self if time_zone == new_zone
  utc.in_time_zone(new_zone)
end
🔎 See on GitHub

inspect()

Returns a string of the object’s date, time, zone, and offset from UTC.

Time.zone.now.inspect # => "2024-11-13 07:00:10.528054960 UTC +00:00"
📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 146
def inspect
  "#{time.strftime('%F %H:%M:%S.%9N')} #{zone} #{formatted_offset}"
end
🔎 See on GitHub

is_a?(klass)

Say we’re a Time to thwart type checking.

Also aliased as: kind_of?.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 507
def is_a?(klass)
  klass == ::Time || super
end
🔎 See on GitHub

isdst()

Alias for: dst?.

iso8601(fraction_digits = 0)

Alias for: xmlschema.

kind_of?(klass)

Alias for: is_a?.

localtime(utc_offset = nil)

Returns a Time instance of the simultaneous time in the system timezone.

Also aliased as: getlocal.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 89
def localtime(utc_offset = nil)
  utc.getlocal(utc_offset)
end
🔎 See on GitHub

marshal_dump()

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 527
def marshal_dump
  [utc, time_zone.name, time]
end
🔎 See on GitHub

marshal_load(variables)

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 531
def marshal_load(variables)
  initialize(variables[0].utc, ::Time.find_zone(variables[1]), variables[2].utc)
end
🔎 See on GitHub

method_missing(...)

Send the missing method to time instance, and wrap result in a new TimeWithZone with the existing time_zone.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 551
def method_missing(...)
  wrap_with_time_zone time.__send__(...)
rescue NoMethodError => e
  raise e, e.message.sub(time.inspect, inspect).sub("Time", "ActiveSupport::TimeWithZone"), e.backtrace
end
🔎 See on GitHub

next_day?()

Alias for: tomorrow?.

past?()

Returns true if the current object’s time is in the past.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 256
def past?
  utc.past?
end
🔎 See on GitHub

period()

Returns the underlying TZInfo::TimezonePeriod.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 78
def period
  @period ||= time_zone.period_for_utc(@utc)
end
🔎 See on GitHub

prev_day?()

Alias for: yesterday?.

respond_to?(sym, include_priv = false)

respond_to_missing? is not called in some cases, such as when type conversion is performed with Kernel#String

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 537
def respond_to?(sym, include_priv = false)
  # ensure that we're not going to throw and rescue from NoMethodError in method_missing which is slow
  return false if sym.to_sym == :to_str
  super
end
🔎 See on GitHub

respond_to_missing?(sym, include_priv)

Ensure proxy class responds to all methods that underlying time instance responds to.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 545
def respond_to_missing?(sym, include_priv)
  time.respond_to?(sym, include_priv)
end
🔎 See on GitHub

rfc2822()

Returns a string of the object’s date and time in the RFC 2822 standard format.

Time.zone.now.rfc2822  # => "Tue, 01 Jan 2013 04:51:39 +0000"

Also aliased as: rfc822.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 206
def rfc2822
  to_fs(:rfc822)
end
🔎 See on GitHub

rfc3339(fraction_digits = 0)

Alias for: xmlschema.

rfc822()

Alias for: rfc2822.

since(other)

Alias for: +.

strftime(format)

Replaces %Z directive with +zone before passing to Time#strftime, so that zone information is correct.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 237
def strftime(format)
  format = format.gsub(/((?:\A|[^%])(?:%%)*)%Z/, "\\1#{zone}")
  getlocal(utc_offset).strftime(format)
end
🔎 See on GitHub

time()

Returns a Time instance that represents the time in time_zone.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 64
def time
  @time ||= incorporate_utc_offset(@utc, utc_offset)
end
🔎 See on GitHub

to_a()

Returns Array of parts of Time in sequence of [seconds, minutes, hours, day, month, year, weekday, yearday, dst?, zone].

now = Time.zone.now     # => Tue, 18 Aug 2015 02:29:27.485278555 UTC +00:00
now.to_a                # => [27, 29, 2, 18, 8, 2015, 2, 230, false, "UTC"]
📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 457
def to_a
  [time.sec, time.min, time.hour, time.day, time.mon, time.year, time.wday, time.yday, dst?, zone]
end
🔎 See on GitHub

to_datetime()

Returns an instance of DateTime with the timezone’s UTC offset

Time.zone.now.to_datetime                         # => Tue, 18 Aug 2015 02:32:20 +0000
Time.current.in_time_zone('Hawaii').to_datetime   # => Mon, 17 Aug 2015 16:32:20 -1000
📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 490
def to_datetime
  @to_datetime ||= utc.to_datetime.new_offset(Rational(utc_offset, 86_400))
end
🔎 See on GitHub

to_f()

Returns the object’s date and time as a floating-point number of seconds since the Epoch (January 1, 1970 00:00 UTC).

Time.zone.now.to_f # => 1417709320.285418
📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 465
def to_f
  utc.to_f
end
🔎 See on GitHub

to_formatted_s(format = :default)

Alias for: to_fs.

to_fs(format = :default)

Returns a string of the object’s date and time.

This method is aliased to to_formatted_s.

Accepts an optional format:

  • :default - default value, mimics Ruby Time#to_s format.

  • :db - format outputs time in UTC :db time. See Time#to_fs(:db).

  • Any key in Time::DATE_FORMATS can be used. See active_support/core_ext/time/conversions.rb.

Also aliased as: to_formatted_s.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 224
def to_fs(format = :default)
  if format == :db
    utc.to_fs(format)
  elsif formatter = ::Time::DATE_FORMATS[format]
    formatter.respond_to?(:call) ? formatter.call(self).to_s : strftime(formatter)
  else
    to_s
  end
end
🔎 See on GitHub

to_i()

Returns the object’s date and time as an integer number of seconds since the Epoch (January 1, 1970 00:00 UTC).

Time.zone.now.to_i # => 1417709320

Also aliased as: tv_sec.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 473
def to_i
  utc.to_i
end
🔎 See on GitHub

to_r()

Returns the object’s date and time as a rational number of seconds since the Epoch (January 1, 1970 00:00 UTC).

Time.zone.now.to_r # => (708854548642709/500000)
📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 482
def to_r
  utc.to_r
end
🔎 See on GitHub

to_s()

Returns a string of the object’s date and time.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 212
def to_s
  "#{time.strftime("%Y-%m-%d %H:%M:%S")} #{formatted_offset(false, 'UTC')}" # mimicking Ruby Time#to_s format
end
🔎 See on GitHub

to_time()

Returns an instance of Time, either with the same timezone as self, with the same UTC offset as self or in the local system timezone depending on the setting of ActiveSupport.to_time_preserves_timezone.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 497
def to_time
  @to_time_with_timezone ||= getlocal(time_zone)
end
🔎 See on GitHub

today?()

Returns true if the current object’s time falls within the current day.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 262
def today?
  time.today?
end
🔎 See on GitHub

tomorrow?()

Returns true if the current object’s time falls within the next day (tomorrow).

Also aliased as: next_day?.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 268
def tomorrow?
  time.tomorrow?
end
🔎 See on GitHub

tv_sec()

Alias for: to_i.

utc()

Returns a Time instance of the simultaneous time in the UTC timezone.

Also aliased as: comparable_time, getgm, getutc, gmtime.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 69
def utc
  @utc ||= incorporate_utc_offset(@time, -utc_offset)
end
🔎 See on GitHub

utc?()

Returns true if the current time zone is set to UTC.

Time.zone = 'UTC'                           # => 'UTC'
Time.zone.now.utc?                          # => true
Time.zone = 'Eastern Time (US & Canada)'    # => 'Eastern Time (US & Canada)'
Time.zone.now.utc?                          # => false

Also aliased as: gmt?.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 111
def utc?
  @is_utc
end
🔎 See on GitHub

utc_offset()

Returns the offset from current time to UTC time in seconds.

Also aliased as: gmt_offset, gmtoff.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 117
def utc_offset
  period.observed_utc_offset
end
🔎 See on GitHub

xmlschema(fraction_digits = 0)

Returns a string of the object’s date and time in the ISO 8601 standard format.

Time.zone.now.xmlschema  # => "2014-12-04T11:02:37-05:00"

Also aliased as: iso8601, rfc3339.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 154
def xmlschema(fraction_digits = 0)
  if @is_utc
    utc.iso8601(fraction_digits || 0)
  else
    str = time.iso8601(fraction_digits || 0)
    str[-1] = formatted_offset(true, "Z")
    str
  end
end
🔎 See on GitHub

yesterday?()

Returns true if the current object’s time falls within the previous day (yesterday).

Also aliased as: prev_day?.

📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 275
def yesterday?
  time.yesterday?
end
🔎 See on GitHub

zone()

Returns the time zone abbreviation.

Time.zone = 'Eastern Time (US & Canada)'   # => "Eastern Time (US & Canada)"
Time.zone.now.zone # => "EST"
📝 Source code 
# File activesupport/lib/active_support/time_with_zone.rb, line 139
def zone
  period.abbreviation
end
🔎 See on GitHub

Definition files