Name
DateAdd Function
Syntax
DateAdd(interval
,number
,date
)
interval
Use: Required
Data Type: String
An expression denoting the interval of time you need to add or subtract (see the following table “Interval Settings”).
number
Use: Required
Data Type: Any numeric type
An expression denoting the number of time intervals you want to add or subtract.
date
Use: Required
Data Type: Date
The date on which to base the
DateAdd
calculation.
Interval Settings
Setting | Description |
| Year |
| Quarter |
| Month |
| Day of year |
| Day |
| Weekday |
| Week |
| Hour |
| Minute |
| Second |
Return Value
A Date.
Description
Returns a Date representing the result of adding or subtracting a given number of time periods to or from a given date or time. For instance, you can calculate the date 178 months before today’s date, or the date and time 12,789 minutes from now.
Rules at a Glance
Specify the interval value as a string enclosed in quotation marks (e.g.,
"ww"
).If
number
is positive, the result will be afterdate
; ifnumber
is negative, the result will be beforedate
.The DateAdd function has a built-in calendar algorithm to prevent it from returning an invalid date. For example, if you add 10 minutes to 31 December 1999 23:55, DateAdd automatically recalculates all elements of the date to return a valid date—in this case, 1 January 2000 00:05. In addition, the calendar algorithm takes the presence of 29 February into account for leap years.
Example
Dim lNoOfIntervals lNoOfIntervals = 100 Msgbox DateAdd("d", lNoOfIntervals, Now)
Programming ...
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