ADcJo‖DateDiff Function

Contents
zdJRM‖

# rUz5H‖DateDiff Function

kAC7A‖Returns the number of date or time intervals between two given date values.

### FVEx2‖Syntax:

    AzmeS‖DateDiff (interval As String, date1 As Date, date2 As Date [, firstDayOfWeek As Integer [, firstWeekOfYear As Integer]]) As Double

## BPDH8‖Return value:

BXncY‖A number.

### WADQ4‖Parameters:

uEH2f‖ interval - A string expression from the following table, specifying the date or time interval.

yKYH5‖interval (string value) | BrkDy‖Explanation
--- | ---
yyyy | uCMGD‖Year
q | aAbFF‖Quarter
m | DnwYQ‖Month
y | 5ceAL‖Day of year
w | zMz7B‖Weekday
ww | Wknbt‖Week of year
d | QUMAr‖Day
h | bW8VY‖Hour
n | E7sMZ‖Minute
s | saACB‖Second

KvjGL‖ date1, date2 - The two date values to be compared.

5FGDA‖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#

hjbSu‖ firstdayofweek: An optional parameter that specifies the starting day of a week.

wpCoP‖firstdayofweek value | gmaR8‖Explanation
--- | ---
A5RkW‖0 | Xt9Xx‖Use system default value
6UMdD‖1 | uV8iz‖Sunday (default)
zuFMX‖2 | vUz3C‖Monday
2YAp3‖3 | KCW5A‖Tuesday
8rkEA‖4 | hhEsB‖Wednesday
3F47C‖5 | Zv7Dn‖Thursday
aP5Bd‖6 | EbThD‖Friday
CmnqZ‖7 | BjBfG‖Saturday

UFDDA‖ firstweekofyear: An optional parameter that specifies the starting week of a year.

e3gQd‖firstweekofyear value | zAFFS‖Explanation
--- | ---
XEzpc‖0 | jXczC‖Use system default value
sqUf8‖1 | 65vhA‖Week 1 is the week with January, 1st (default)
7KXnC‖2 | wFZe8‖Week 1 is the first week containing four or more days of that year
85UKo‖3 | xAkGk‖Week 1 is the first week containing only days of the new year

### EFSA4‖Example:

    Sub example_datediff
        MsgBox DateDiff("d", #1/1/2005#, #2005-12-31#)
    End Sub

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