@dateadd Date number after applying offset.

@datediff Difference between two date numbers.

@dateceil Last possible date in a time period.

@datefloor Earliest possible date in a time period.

@datenext First possible date in the next time period.

@datepart Extract part of a date number.

@datestr String representation of a date number.

@dateval Date number associated with a string representation of a date.

@localt Convert UTC (Coordinated Universal Time) to local time.

@makedate Convert numeric representation of a date to date number.

@now Current time date number.

@strnow String representation of the current date and time.

@time Current time as a string.

@tz Convert time in source time zone to destination time.

@tzlist Available time zone specifications.

@tzspec Time zone specification.

@utc Convert local time to UTC (Coordinated Universal Time).

@dtoo Observation number in the workfile associated with a date string.

@otod Workfile observation to date string.

@otods Sample observation to date string.

@after Indicators for whether observation postdates a date.

@before Indicator for whether observation precedes a date.

@date Date number of observation.

@day Day of observation.

@daycount Number of days of week in observation.

@during Indicator of whether an observation is between two dates.

@event Event identifier for observation.

@enddate Last possible date of observation.

@holiday Holiday identifier for observation.

@holidayset Multiple holiday identifiers for observation.

@hour Hour of the day of the observation (integer).

@hourf Hour of the date of the observation (floating point)

@isperiod Is this the first observation matching the specified period.

@minute Minute of the hour of the observation.

@month Month of the year of the observation.

@quarter Quarter of the year of the observation.

@seas Seasonal dummy variable.

@second Seconds of the minute of the observation.

@weekday Day of the week of the observation.

@year Year of the observation.