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fasttime::fastPOSIXct		Fast version of 'as.POSIXct.character' for GMT fixed format.
chron::chron		Create a Chronological Object
chron::cut.dates		Create a Factor from a Chron or Dates Object
chron::dates		Generate Dates and Times Components from Input
chron::day.of.week		Convert between Julian and Calendar Dates
chron::days		Return Various Periods from a Chron or Dates Object
chron::hours		Return Hours, Minutes, or Seconds from a Times Object
chron::is.holiday		Find Weekends and Holidays in a Chron or Dates Object
chron::origin		Chron Origin
chron::seq.dates		Generate Chron or Dates Sequences
chron::round.times		Truncate times Objects
lubridate::DateTimeUpdate		Changes the components of a date object
lubridate::am		Does date time occur in the am or pm?
lubridate::as.duration		Change an object to a duration
lubridate::as.interval		Change an object to an 'interval'
lubridate::as.period		Change an object to a period
lubridate::date		Get/set date component of a date-time
lubridate::date_decimal		Converts a decimal to a date
lubridate::is.Date		Various date utilities
lubridate::day		Get/set days component of a date-time
lubridate::decimal_date		Converts a date to a decimal of its year
lubridate::dst		Get *d*aylight *s*avings *t*ime indicator of a date-time
lubridate::duration		Create a duration object.
lubridate::force_tz		Replace time zone to create new date-time
lubridate::hour		Get/set hours component of a date-time
lubridate::is.difftime		Is x a difftime object?
lubridate::is.instant		Is x a date-time object?
lubridate::is.timespan		Is x a length of time?
lubridate::leap_year		Is a year a leap year?
lubridate::make_difftime		Create a difftime object.
lubridate::minute		Get/set minutes component of a date-time
lubridate::month		Get/set months component of a date-time
lubridate::now		The current day and time
lubridate::origin		1970-01-01 UTC
lubridate::parse_date_time		User friendly date-time parsing functions
lubridate::period		Create or parse period objects
lubridate::is.POSIXt		Various POSIX utilities
lubridate::pretty_dates		Computes attractive axis breaks for date-time data
lubridate::round_date		Round, floor and ceiling methods for date-time objects
lubridate::second		Get/set seconds component of a date-time
lubridate::time_length		Compute the exact length of a time span
lubridate::timespan		Description of time span classes in lubridate
lubridate::tz		Get/set time zone component of a date-time
lubridate::week		Get/set weeks component of a date-time
lubridate::with_tz		Get date-time in a different time zone
lubridate::year		Get/set years component of a date-time
lubridate::ymd		Parse dates with *y*ear, *m*onth, and *d*ay components
base::format.Date		Date Conversion Functions to and from Character
base::as.POSIXct		Date-time Conversion Functions
base::cut.POSIXt		Convert a Date or Date-Time Object to a Factor
base::Date		Date Class
base::DateTimeClasses		Date-Time Classes
base::difftime		Time Intervals / Differences
base::ISOdatetime		Date-time Conversion Functions from Numeric Representations
base::+.Date		Operators on the Date Class
base::rep		Replicate Elements of Vectors and Lists
base::round.POSIXt		Round / Truncate Date-Time Objects
base::seq.Date		Generate Regular Sequences of Dates
base::seq.POSIXt		Generate Regular Sequences of Times
base::format.POSIXct		Date-time Conversion Functions to and from Character
base::Sys.time		Get Current Date and Time
base::Sys.timezone		Time Zones
base::weekdays		Extract Parts of a POSIXt or Date Object
graphics::axis.POSIXct		Date and Date-time Plotting Functions
graphics::hist.POSIXt		Histogram of a Date or Date-Time Object

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