Excel VBA: Date Calculations

To add or subtract an interval (a relative date) from a date, we could use DateAdd function. The syntax is:

DateAdd(interval, number, date)

The DateAdd function syntax has these named arguments:

Part	Description
interval	Required. String expression that is the interval of time you want to add.
number	Required. Numeric expression that is the number of intervals you want to add. It can be positive (to get dates in the future) or negative (to get dates in the past).
date	Required. Variant (Date) or literal representing date to which the interval is added.

Settings

The interval argument has these settings:

Setting	Description
yyyy	Year
q	Quarter
m	Month
y	Day of year
d	Day
w	Weekday
ww	Week
h	Hour
n	Minute
s	Second

The following example add two months to October 31, 2009:

MsgBox DateAdd("m",2,"31-Jan-09"))

Related posts:

• The MsgBox Function
  
• Excel VBA Macro Examples: Sub Procedure
• Excel VBA Macro Tutorial: Range Objects
• Excel VBA Macro Tutorial: Controlling Execution

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