Performing time-date operations

A time-date value consists of a year, month, day, hour, minute, and second. You can use a time-date value "as is" in a time-date field, but must convert it with @Text to use it as a string. You can convert a string to a time-date value with @TextToTime.

A time-date constant is a date, a time, or both, in brackets. The date is the month, day, and year separated by a slash (/) or a hyphen (-) for OS/2. Year is optional and defaults to the current year; a 2-digit year means the 20th century if 50 or greater, and the 21st century if less than 50.

The time is the hour, minute, and second (optional; defaults to 0) separated by colons. You can use 24-hour time or add "PM" for afternoon hours. You can add the time zone to indicate another time zone. Separate the components with spaces. Some examples of time-date constants are [6/30/97], [5:30:00 PM], [17:30:00], [17:30 EST], and [6/30 5:30 PM].

Dates can be compared and subtracted. Subtraction yields a numeric value representing seconds. To measure the difference between two dates in days, divide the result by 86,400, which is the number of seconds in a day. For example, if you have two date fields, date1 containing [07/01/01] and date2 containing [07/05/01], the following returns 345,600:

date2-date1

To display the result as 4 days instead of 345,600 seconds, use the following code:

(date2-date1)/86,400

The following @functions determine and manipulate time-date values.


Function	Description
@Accessed	Returns the time-date the document was last accessed.
@Adjust(time-date; y; m; d; h; m; s)	Adjusts a time-date by the negative or positive values of the remaining parameters.
@BusinessDays	Returns the number of business days in one or more date ranges.
@Created	Returns the time-date the document was created.
@Date(y; m; d)	Returns the date for year, month, and day.
@Date(y; m; d; h; m; s)	Returns the date for year, month, day, hour, minute, and second.
@Date(time-date)	Returns the date for a time-date.
@Day(time-date)	Extracts the day of the month from a time-date.
@Hour(time-date)	Extracts the hour from a time-date.
@Minute(time-date)	Extracts the minute from a time-date.
@Modified	Returns the time-date the document was last edited and saved.
@Month(time-date)	Extracts the month from a time-date as 1-12.
@Now	Returns the current time-date.
@Now([ServerTime])	Returns the current time-date for the server containing the current database.
@Now([ServerTime]; serverNames )	Returns the current time-date for specified servers.
@Second(time-date)	Extracts the seconds from a time-date.
@Time(h; m; s)	Returns the time for hour, minute, and second.
@Time(y; m; d; h; m; s)	Returns the time for year, month, day, hour, minute, and second.
@Time(time-date)	Returns the time for a time-date.
@Today	Returns today's date.
@Tomorrow	Returns tomorrow's date.
@Weekday(time-date)	Returns the day of the week for a time-date as 1-7 (Sunday through Saturday).
@Year(time-date)	Extracts the year from a time-date.
@Yesterday	Returns yesterday's date.
@Zone	Returns the time zone setting of the current computer.
@Zone	Returns the time zone setting for a time-date.