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Adds a date or time interval to a given date a number of times and returns the resulting date.
DateAdd (interval As String, number As Long, date As Date) As Date
Premenná typu variant obsahujúca dátum.
interval - A string expression from the following table, specifying the date or time interval.
| interval (string value) | Vysvetlenie | 
|---|---|
| yyyy | Rok | 
| q | Štvrtina | 
| m | Mesiac | 
| y | Deň v mesiaci | 
| w | Pracobný deň | 
| ww | Týždeň v roku | 
| d | Deň | 
| h | Hodina | 
| n | Minúta | 
| s | Sekunda | 
number - A numerical expression specifying how many times the interval value will be added when positive or subtracted when negative.
date - A given date or the name of a Variant variable containing a date. The interval value will be added number times to this date.
Sub example_dateadd
    MsgBox DateAdd("m", 1, #1/31/2004#) &" - "& DateAdd(date:=#2005-01-31#, interval:="m", number:=1)
End Sub