Función DatePart
The DatePart function returns a specified part of a date.
DatePart (interval As String, date As Date [, firstDayOfWeek As Integer [, firstWeekOfYear As Integer]]) As Long
Valor de retorno:
The extracted part for the given date.
 interval - A string expression from the following table, specifying the date interval.
  
    | interval (string value) | Explicación | 
  
    | yyyy | Ano | 
  
    | q | Trimestre | 
  
    | m | Mes | 
  
    | y | Día do ano | 
  
    | w | Día da semana | 
  
    | ww | Semana do ano | 
  
    | d | Día | 
  
    | h | Hora | 
  
    | n | Minuto | 
  
    | s | Segundo | 
 
 date - The date from which the result is calculated.
Date literals allow to specify unambiguous date variables that are independent from the current language. Literals are enclosed between hash signs #. Possible formats are:
    - 
        #yyyy-mm-dd# 
- 
        #mm/dd/yyyy# 
 
 firstdayofweek: An optional parameter that specifies the starting day of a week.
  
    | firstdayofweek value | Explicación | 
  
    | 0 | Usar o valor predeterminado do sistema | 
  
    | 1 | Domingo (predefinido) | 
  
    | 2 | Luns | 
  
    | 3 | Martes | 
  
    | 4 | Mércores | 
  
    | 5 | Xoves | 
  
    | 6 | Venres | 
  
    | 7 | Sábado | 
 firstweekofyear: An optional parameter that specifies the starting week of a year.
  
    | firstweekofyear value | Explicación | 
  
    | 0 | Usar o valor predeterminado do sistema | 
  
    | 1 | Semana 1 é a primeira semana de xaneiro (predefinido) | 
  
    | 2 | Semana 1 é a primeira semana que contén catro días ou máis do ano en curso | 
  
    | 3 | Semana 1 é a primeira semana que só contén días do novo ano. | 
 
Sub example_datepart
    MsgBox DatePart("ww", #01/02/2005#) ' displays 2 because weeks start on Sunday
    MsgBox DatePart("ww", #12/31/2005#) ' displays 53
    MsgBox DatePart(date:=#2005-12-30#, interval:="q") ' displays 4
End Sub